169-584: Vulcans , sometimes referred to as Vulcanians , are a fictional extraterrestrial humanoid species in the Star Trek media franchise . They are noted for their strict adherence to logic and reason and suppression of emotion. Known for their pronounced eyebrows and pointed ears, they originate from the fictional planet Vulcan . In the Star Trek universe, they were the first extraterrestrial species to make contact with humans. The most notable Vulcan character
338-435: A mantra , a combination of core letters or words on deity or themes. Jain followers practice mantra regularly by chanting loudly or silently in mind. The meditation technique of contemplation includes agnya vichāya , in which one contemplates on seven facts – life and non-life, the inflow, bondage, stoppage and removal of karmas , and the final accomplishment of liberation. In apaya vichāya , one contemplates on
507-419: A mantra ) for the purpose of reaching a heightened level of spiritual awareness." In modern psychological research, meditation has been defined and characterized in various ways. Many of these emphasize the role of attention and characterize the practice of meditation as attempts to detach from reflexive, "discursive thinking," not judging the meditation-process itself ("logical relaxation"), to achieve
676-682: A Vulcan colony named "New Vulcan" had been established. Vulcans once practiced a form of polytheism ; this can be seen in gods of war , peace, and death depicted on the Stone of Gol relic in the TNG episode " Gambit ". The DVD commentary for " Amok Time " says that TOS writer D. C. Fontana named the Vulcan god of death "Shariel", a bust of whom is seen in Spock's quarters. Extraterrestrial life Extraterrestrial life , or alien life (colloquially, alien ),
845-460: A Vulcan mind-meld. Picard does, in fact, have tremendous difficulty controlling himself while experiencing Sarek's emotions during the meld, including the ambassador's suppressed loves and hidden regrets. Vulcans are telepaths . Beginning in the original series, the character Spock was able to "mind meld" (see below) by touching another being and to share thoughts. Vulcans have also displayed telepathy at great distance and through walls. A mind meld
1014-404: A Vulcan must have sexual intercourse with someone or the chemical imbalance may cause insanity, loss of self-control, and death. Despite popular opinion, TOS writer and story editor, D. C. Fontana , insists that pon farr is not the only time that Vulcans feel sexual desire or engage in sexual activity: Vulcans mate normally any time they want to. However, every seven years you do the ritual,
1183-443: A Vulcan's healing ability to another to aid in regeneration for serious injury. Sarek transferred some of his katra to Michael Burnham ( DIS Season 1, Episode 6, "Lethe") in order to save her life as a child, which connected Michael to Sarek, and she refers to it as a "soul graft". Katras can be returned to the body. Such was the case with Spock , who, near the end of Star Trek II: The Wrath of Khan , implanted his katra into
1352-416: A basic component of the development of a potential extraterrestrial technological civilization, as it is on Earth. Fossil fuels may likely be generated and used on such worlds as well. The abundance of chlorofluorocarbons in the atmosphere can also be a clear technosignature, considering their role in ozone depletion . Light pollution may be another technosignature, as multiple lights on the night side of
1521-611: A catalog of microorganisms, with the way each one reacts to sunlight. The goal is to help with the search for similar organisms in exoplanets, as the starlight reflected by planets rich in such organisms would have a specific spectrum, unlike that of starlight reflected from lifeless planets. If Earth was studied from afar with this system, it would reveal a shade of green, as a result of the abundance of plants with photosynthesis. In August 2011, NASA studied meteorites found on Antarctica, finding adenine , guanine , hypoxanthine and xanthine . Adenine and guanine are components of DNA, and
1690-409: A challenger for marriage engages the bonded male in a fight to the death. Alternatively, the bonded male has the option of rejecting his intended bride and choosing another. It is acceptable for a male to "release" his mate from marriage (effectively the same as a divorce ). It is not established whether females have the same option, and T'Pring stated in " Amok Time " that a koon-ut-kal-if-fee challenge
1859-474: A deeper, more devout, or more relaxed state. Bond et al. (2009) identified criteria for defining a practice as meditation "for use in a comprehensive systematic review of the therapeutic use of meditation", using "a 5-round Delphi study with a panel of 7 experts in meditation research" who were also trained in diverse but empirically highly studied (Eastern-derived or clinical) forms of meditation : three main criteria ... as essential to any meditation practice:
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#17330932436402028-454: A devotee to desire to begin to meditate. Nām japnā involves focusing one's attention on the names or great attributes of God. Taoist meditation has developed techniques including concentration, visualization, qi cultivation, contemplation , and mindfulness meditations in its long history. Traditional Daoist meditative practices influenced Buddhism creating the unique meditative practices of Chinese Buddhism that then spread through
2197-526: A few occasions (without actually using the term), Sarek openly expressed affection for both his human wives, and a clear bond of love existed between T'Pol and her mother, T'Les. The bond between Spock and his adopted sister, Michael Burnham , is a central theme of the Star Trek: Discovery second season. In the TOS episode " The Savage Curtain ", Surak explains to Kirk Vulcan's history of violence and
2366-424: A fictional desert planet , Vulcans can survive without water for longer periods than humans. Vulcans can also go without sleep for as long as two weeks. Vulcans are known as logical beings who have removed emotions from their daily lives. The Vulcan character, Spock, struggles with this throughout the original series as he is half-human. T'Pol states that paranoia and homicidal rage were common on Vulcan before
2535-551: A florentined white gold triangle with a stone of brilliant white fabulite —an artificial gem "developed by the laser industry and used in space mechanisms for its optical qualities", and thus well-suited as a gift for an actor in a science fiction show. Readers were encouraged to submit their interest in such a product to Lincoln Enterprises mail order firm. It was noted that less expensive materials would keep costs down. According to William Shatner in Star Trek Memories , IDIC
2704-888: A form of focused attention, calms down the mind; this calmed mind can then investigate the nature of reality, by monitoring the fleeting and ever-changing constituents of experience, by reflective investigation, or by "turning back the radiance," focusing awareness on awareness itself and discerning the true nature of mind as awareness itself. Matko and Sedlmeier (2019) "call into question the common division into 'focused attention' and 'open-monitoring' practices." They argue for "two orthogonal dimensions along which meditation techniques could be classified," namely "activation" and "amount of body orientation," proposing seven clusters of techniques: "mindful observation, body-centered meditation, visual concentration, contemplation, affect-centered meditation, mantra meditation, and meditation with movement." Jonathan Shear argues that transcendental meditation
2873-478: A living entity must have the capacity to replicate itself, the capacity to avoid damage/decay, and the capacity to acquire and process resources in support of the first two capacities. Life on Earth started with an RNA world and later evolved to its current form, where some of the RNA tasks were transferred to DNA and proteins . Extraterrestrial life may still be stuck using RNA, or evolve into other configurations. It
3042-523: A long-winded explanation of the philosophy. The actors refused to film it until Roddenberry cut it down. In an issue of The Humanist , Majel Barrett claimed that the philosophy of "Infinite Diversity in Infinite Combinations" was based on the teachings of Rabbi Maimonides . Although its origins are rooted in marketing and sales, the IDIC became a theme writers and set designers have used in most of
3211-727: A machine and was able to establish telepathic contact with the space probe V'ger, with silicon-based lifeform, the Horta, and, in another instance, with a humpback whale . Mind melds can be used both to erase and restore memories; Spock performs each of these on Captain Kirk during TOS ' s third season. A mind meld was even used to rejoin Spock's katra (see below) with his physical body in Star Trek III: The Search for Spock . Mind melds can also allow more than one mind to experience memories and sensations, and sometimes even interact with
3380-446: A major cultural impact, especially extraterrestrials in fiction . Science fiction has communicated scientific ideas, imagined a range of possibilities, and influenced public interest in and perspectives on extraterrestrial life. One shared space is the debate over the wisdom of attempting communication with extraterrestrial intelligence. Some encourage aggressive methods to try to contact intelligent extraterrestrial life. Others – citing
3549-409: A male and a female are bonded as children, with consummation at a later date. Spock explains that this childhood pairing has no one-for-one human analogue, as it is considered less than a full "marriage", but more than simply a "betrothal". This is why Spock first described T'Pring as his "wife", before later explaining that this was an incorrect approximation. Following adult union, it is customary for
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#17330932436403718-524: A math equation, none of its values were known at the time. Although some values may eventually be measured, others are based on social sciences and are not knowable by their very nature. This does not allow one to make noteworthy conclusions from the equation. Based on observations from the Hubble Space Telescope , there are nearly 2 trillion galaxies in the observable universe. It is estimated that at least ten per cent of all Sun-like stars have
3887-466: A mixed aromatic - aliphatic structure") that could be created naturally, and rapidly, by stars . It is still unclear if those compounds played a role in the creation of life on Earth, but Sun Kwok, of the University of Hong Kong, thinks so. "If this is the case, life on Earth may have had an easier time getting started as these organics can serve as basic ingredients for life." In August 2012, and in
4056-662: A natural development from the sense-restraint and moral constrictions prescribed by the Buddhist tradition. The Buddha identified two paramount mental qualities that arise from wholesome meditative practice or bhavana , namely samatha ("calm," "serenity" "tranquility") and vipassana (insight). As the developing tradition started to emphasize the value of liberating insight, and dhyana came to be understood as concentration, samatha and vipassana were understood as two distinct meditative techniques. In this understanding, samatha steadies, composes, unifies and concentrates
4225-477: A number of contemporary scholars and scholar-practitioners, it is actually a description of the development of perfected equanimity and mindfulness, apparently induced by satipatthana, an open monitoring of the breath, without trying to regulate it. The same description, in a different formula, can be found in the bojjhanga , the "seven factors of awakening," and may therefore refer to the core program of early Buddhist bhavana . According to Vetter, dhyana seems to be
4394-430: A peaceful society. Some Vulcans disagreed, unfortunately, causing a war to break out. The two sides separated, causing the emotional ones to become Romulans and the logical ones to become what is referred to as modern-day Vulcans. Vulcans still possess and experience emotions, but make great efforts to keep them from being expressed or controlling their behavior. They occasionally have mental breakdowns. Only those who follow
4563-627: A planetary system formed by a star at the center, the Sun , and the objects that orbit it: other planets, moons, asteroids, and comets. The sun is part of the Milky Way , a galaxy . The Milky Way is part of the Local Group , a galaxy group that is in turn part of the Laniakea Supercluster . The universe is composed of all similar structures in existence. The immense distances between celestial objects
4732-462: A potential explanation to the Fermi paradox. If extraterrestrial life exists, it could range from simple microorganisms and multicellular organisms similar to animals or plants, to complex alien intelligences akin to humans . When scientists talk about extraterrestrial life, they consider all those types. Although it is possible that extraterrestrial life may have other configurations, scientists use
4901-459: A practice of only 8 minutes per day. Research shows improvement in meditation time with simple oral and video training. Some meditators practice for much longer, particularly when on a course or retreat . Some meditators find practice best in the hours before dawn . Some religions have traditions of using prayer beads as tools in devotional meditation. Most prayer beads and Christian rosaries consist of pearls or beads linked together by
5070-425: A prolonged mind meld attempt from a female Vulcan Maquis member, much to the latter's frustration. Vulcans are able to implant their "katra" into another person via a mind meld just before death. Sarek explained to Kirk that Spock's katra was "his essence, everything that was not of the body, his katra, his living spirit...everything that he was, everything that he knew". He further explained that this transference
5239-566: A reasonable scientific explanation for any gathered data. In 1961, astronomer and astrophysicist Frank Drake devised the Drake equation as a way to stimulate scientific dialogue at a meeting on the search for extraterrestrial intelligence (SETI). The Drake equation is a probabilistic argument used to estimate the number of active, communicative extraterrestrial civilisations in the Milky Way galaxy . The Drake equation is: where: and Drake's proposed estimates are as follows, but numbers on
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5408-443: A result has been conceived, even if hypothetical. Evolution requires life to be divided into individual organisms, and no alternative organisation has been satisfactorily proposed either. At the basic level, membranes define the limit of a cell, between it and its environment, while remaining partially open to exchange energy and resources with it. The evolution from simple cells to eukaryotes, and from them to multicellular lifeforms,
5577-450: A rocky planet can be a sign of advanced technological development. However, modern telescopes are not strong enough to study exoplanets with the required level of detail to perceive it. Meditation Meditation is a practice in which an individual uses a technique to train attention and awareness and detach from reflexive, "discursive thinking," achieving a mentally clear and emotionally calm and stable state, while not judging
5746-468: A scale. Life on Earth is quite ubiquitous across the planet and has adapted over time to almost all the available environments in it, extremophiles and the deep biosphere thrive at even the most hostile ones. As a result, it is inferred that life in other celestial bodies may be equally adaptive. However, the origin of life is unrelated to its ease of adaptation, and may have stricter requirements. A celestial body may not have any life on it, even if it
5915-400: A scene in " The Enemy Within ", in which a transporter malfunction had divided Kirk between his good and evil selves, that required Spock to render the "evil" Kirk unconscious and subduing him by hitting him over the head with the butt of a phaser. Nimoy was convinced that such overt violence, in addition to being too similar to that found in many crime dramas of the time, was uncharacteristic of
6084-470: A series of factors that range from the location in the galaxy and the configuration of the Solar System to local characteristics of the planet, and that it is unlikely that all such requirements are simultaneously met by another planet. The proponents of this hypothesis consider that very little evidence suggests the existence of extraterrestrial life, and that at this point it is just a desired result and not
6253-563: A solvent other than water. The low temperatures required would add an extra problem, the difficulty to kickstart a process of abiogenesis to create life in the first place. Norman Horowitz , head of the Jet Propulsion Laboratory bioscience section for the Mariner and Viking missions from 1965 to 1976 considered that the great versatility of the carbon atom makes it the element most likely to provide solutions, even exotic solutions, to
6422-440: A star's light and heat, and so its lifeforms would not grow beyond a certain complexity. There is also research in assessing the capacity of life for developing intelligence. It has been suggested that this capacity arises with the number of potential niches a planet contains, and that the complexity of life itself is reflected in the information density of planetary environments, which in turn can be computed from its niches. It
6591-651: A system of planets, i.e. there are 6.25 × 10 stars with planets orbiting them in the observable universe. Even if it is assumed that only one out of a billion of these stars has planets supporting life, there would be some 6.25 billion life-supporting planetary systems in the observable universe. A 2013 study based on results from the Kepler spacecraft estimated that the Milky Way contains at least as many planets as it does stars, resulting in 100–400 billion exoplanets. The apparent contradiction between high estimates of
6760-492: A thread. The Roman Catholic rosary is a string of beads containing five sets with ten small beads. Eastern and Oriental Orthodox have traditions of using prayer ropes called Comboschini or Meqetaria as an aid to prayerful meditation. The Hindu japa mala has 108 beads. The figure 108 in itself having spiritual significance as the energy of the sounds equivalates to Om , as well as those used in Gaudiya Vaishnavism ,
6929-477: A wide range of dissimilar practices in different traditions and cultures. In popular usage, the word "meditation" and the phrase "meditative practice" are often used imprecisely to designate practices found across many cultures. These can include almost anything that is claimed to train the attention of mind or to teach calmness or compassion. There remains no definition of necessary and sufficient criteria for meditation that has achieved widespread acceptance within
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7098-461: A world first, astronomers at Copenhagen University reported the detection of a specific sugar molecule, glycolaldehyde , in a distant star system. The molecule was found around the protostellar binary IRAS 16293-2422 , which is located 400 light years from Earth. Glycolaldehyde is needed to form ribonucleic acid , or RNA, which is similar in function to DNA. This finding suggests that complex organic molecules may form in stellar systems prior to
7267-455: A yellowish hue to their skin . A Vulcan's on-screen blood is green due to copper-based hemocyanin . Vulcans are said to possess an inner eyelid, or nictitating membrane , which protects their vision from bright light, an evolutionary trait developed due to the fictional planet Vulcan being so close to its sun. In addition, their heart is located on the right side of the torso, between the ribs and pelvis; as Dr. McCoy once says about Spock after
7436-638: Is Spock , first played by actor Leonard Nimoy in Star Trek: The Original Series (1966–1969). Some aspects of this fictional alien race that have entered popular culture are their pointy ears, the Vulcan salute , the Vulcan nerve pinch , and their adherence to logical thinking and disdain for emotion. The Vulcan Mister Spock first appeared in the original 1965 Star Trek pilot, " The Cage ", shown to studio executives. Show creator Gene Roddenberry revealed in 1964 that he wanted an alien as part of
7605-402: Is life that originates from another world rather than on Earth . No extraterrestrial life has yet been scientifically conclusively detected. Such life might range from simple forms such as prokaryotes to intelligent beings , possibly bringing forth civilizations that might be far more advanced than humans. The Drake equation speculates about the existence of sapient life elsewhere in
7774-549: Is "a little over" 16 light years from Earth supports this location, as 40 Eridani A is 16.39 light-years from our own Solar System . The planet's location is confirmed by a map shown in the Star Trek: Discovery episode " Magic to Make the Sanest Man Go Mad ". In several non-canon works, Vulcan is also claimed to be located in the triple star system 40 Eridani , less than 17 light-years from Earth. The Star Trek: Discovery episode "Unification III" reveals that after
7943-585: Is a difficulty for the study of extraterrestrial life. So far, humans have only set foot on the Moon and sent robotic probes to other planets and moons in the Solar System. Although probes can withstand conditions that may be lethal to humans, the distances cause time delays: the New Horizons took nine years after launch to reach Pluto . No probe has ever reached extrasolar planetary systems. The Voyager 2 has left
8112-698: Is a technique for sharing thoughts, experiences, memories, and knowledge with another individual, essentially a limited form of telepathy . It usually requires physical contact with a subject, though instances of mind melds without contact have been seen. When first depicted in the TOS episode " Dagger of the Mind ", the procedure was said to require several moments of intense concentration and preparation. However, subsequent episodes show contact between minds occurring almost immediately. Although most often seen done with humanoids, mind melds can be performed with members of other species. Spock even once successfully mind melded with
8281-501: Is also conceivable that there are forms of life whose solvent is a liquid hydrocarbon , such as methane , ethane or propane . Another unknown aspect of potential extraterrestrial life would be the chemical elements that would compose it. Life on Earth is largely composed of carbon, but there could be other hypothetical types of biochemistry . A replacement for carbon would need to be able to create complex molecules, store information required for evolution, and be freely available in
8450-409: Is also sometimes done while walking, known as kinhin , while doing a simple task mindfully, known as samu , or while lying down, known as shavasana . The Transcendental Meditation technique recommends practice of 20 minutes twice per day. Some techniques suggest less time, especially when starting meditation, and Richard Davidson has quoted research saying benefits can be achieved with
8619-426: Is an "automatic self-transcending" technique, different from focused attention and open monitoring. In this kind of practice, "there is no attempt to sustain any particular condition at all. Practices of this kind, once started, are reported to automatically 'transcend' their own activity and disappear, to be started up again later if appropriate." Yet, Shear also states that "automatic self-transcending" also applies to
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#17330932436408788-416: Is being carried out both directly and indirectly. As of September 2017 , 3,667 exoplanets in 2,747 systems have been identified , and other planets and moons in the Solar System hold the potential for hosting primitive life such as microorganisms . As of 8 February 2021, an updated status of studies considering the possible detection of lifeforms on Venus (via phosphine ) and Mars (via methane )
8957-554: Is believed to be pure consciousness, beyond any attachment or aversion. The practitioner strives to be just a knower-seer ( gyata-drashta ). Jain meditation can be broadly categorized into Dharma dhyana and Shukla dhyana . Dharma dhyana is discriminating knowledge (bheda-vijñāna) of the tattvas (truths or fundamental principles), while shukla dhyana is meditation proper. Jainism uses meditation techniques such as pindāstha-dhyāna, padāstha-dhyāna, rūpāstha-dhyāna, rūpātita-dhyāna, and savīrya-dhyāna . In padāstha dhyāna, one focuses on
9126-732: Is best thought of as a natural category of techniques best captured by ' family resemblances ' ... or by the related 'prototype' model of concepts ." Several other definitions of meditation have been used by influential modern reviews of research on meditation across multiple traditions: In the West, meditation techniques have often been classified in two broad categories, which in actual practice are often combined: focused (or concentrative) meditation and open monitoring (or mindfulness) meditation: Direction of mental attention... A practitioner can focus intensively on one particular object (so-called concentrative meditation ), on all mental events that enter
9295-403: Is common knowledge that the conditions on other planets in the solar system, in addition to the many galaxies outside of the Milky Way galaxy , are very harsh and seem to be too extreme to harbor any life. The environmental conditions on these planets can have intense UV radiation paired with extreme temperatures, lack of water, and much more that can lead to conditions that don't seem to favor
9464-485: Is complex and defined by several factors. Being in the habitable zone is not enough for a planet to be habitable, not even to actually have such liquid water. Venus is located in the habitable zone of the Solar System but does not have liquid water because of the conditions of its atmosphere. Jovian planets or gas giants are not considered habitable even if they orbit close enough to their stars as hot Jupiters , due to crushing atmospheric pressures. The actual distances for
9633-504: Is confirmed in the novelisation of Star Trek IV: The Voyage Home . Kirk buys some candy to get change for the bus. When he gives one to Spock, Spock asks if it contains sucrose. When Kirk asks why, Spock tells him that sucrose has the same effect on Vulcans as alcohol has on humans. An episode of Star Trek: Voyager mentions that Vulcan coffee is poisonous to humans. Every seven years, Vulcan males and females experience an overpowering hormone imbalance known as pon farr. Once triggered,
9802-509: Is embodied in the Copernican principle , which states that Earth does not occupy a unique position in the Universe, and the mediocrity principle , which states that there is nothing special about life on Earth. Other authors consider instead that life in the cosmos, or at least multicellular life, may be actually rare. The Rare Earth hypothesis maintains that life on Earth is possible because of
9971-462: Is given an IDIC pendant from her mother T'Les, she holds an IDIC pendant in " Terra Prime " while she is in mourning for her dying child, and in the episode " The Andorian Incident " the IDIC symbol appears on small playing pieces that are being used to construct a map of the P'Jem catacombs. In the DS9 episode " The Jem'Hadar ", Quark mentions selling Vulcan IDIC pins, and in the DS9 episode " Take Me Out to
10140-439: Is likely devoid of life. However, Venus is still of interest to astrobiologists, as it is a terrestrial planet that was likely similar to Earth in its early stages and developed in a different way. There is a greenhouse effect , the surface is the hottest in the Solar System, sulfuric acid clouds, all surface liquid water is lost, and it has a thick carbon-dioxide atmosphere with huge pressure. Comparing both helps to understand
10309-444: Is no guarantee that it is transmitting radio communications in the direction of Earth. The length of time required for a signal to travel across space means that a potential answer may arrive decades or centuries after the initial message. The atmosphere of Earth is rich in nitrogen dioxide as a result of air pollution , which can be detectable. The natural abundance of carbon, which is also relatively reactive, makes it likely to be
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#173309324364010478-657: Is not guaranteed. The Cambrian explosion took place thousands of millions of years after the origin of life, and its causes are not fully known yet. On the other hand, the jump to multicellularity took place several times, which suggests that it could be a case of convergent evolution , and so likely to take place on other planets as well. Palaeontologist Simon Conway Morris considers that convergent evolution would lead to kingdoms similar to our plants and animals, and that many features are likely to develop in alien animals as well, such as bilateral symmetry , limbs , digestive systems and heads with sensory organs . Scientists from
10647-510: Is ongoing to better understand the effects of meditation on health ( psychological , neurological , and cardiovascular ) and other areas. The English meditation is derived from Old French meditacioun , in turn from Latin meditatio from a verb meditari , meaning "to think, contemplate, devise, ponder". In the Catholic tradition, the use of the term meditatio as part of a formal, stepwise process of meditation goes back to at least
10816-873: Is that of the Jewish priestly blessing: a hand gesture consisting of a raised hand with the palm forward and the thumb extended, while the fingers are parted between the middle and ring finger. Typically, the phrase "live long and prosper" is uttered when making the salute, adapting the priestly blessing "may the Lord bless you and keep you." An appropriate reply would be to return the gesture and utter either "live long and prosper", or "peace and long life". Vulcans are depicted as similar in appearance to humans, as budget constraints in The Original Series did not allow for elaborate make-up. All Vulcans have arched and upswept eyebrows and pointy ears . White actors portraying Vulcans are given
10985-466: Is that the chemical elements that make up life, such as carbon and water, are ubiquitous in the universe. The third is that the physical laws are universal, which means that the forces that would facilitate or prevent the existence of life would be the same ones as on Earth. According to this argument, made by scientists such as Carl Sagan and Stephen Hawking , it would be improbable for life not to exist somewhere else other than Earth. This argument
11154-421: Is that there are natural sources of such signals as well, such as gamma-ray bursts and supernovae, and the difference between a natural signal and an artificial one would be in its specific patterns. Astronomers intend to use artificial intelligence for this, as it can manage large amounts of data and is devoid of biases and preconceptions. Besides, even if there is an advanced extraterrestrial civilization, there
11323-434: Is through the release of the hindrances and ending of craving through the meditative development of insight that one gains liberation. In Sikhism , simran (meditation) and good deeds are both necessary to achieve the devotee's spiritual goals; without good deeds meditation is futile. When Sikhs meditate, they aim to feel God's presence and emerge in the divine light. It is only God's divine will or order that allows
11492-447: Is unclear if our biochemistry is the most efficient one that could be generated, or which elements would follow a similar pattern. However, it is likely that, even if cells had a different composition to those from Earth, they would still have a cell membrane . Life on Earth jumped from prokaryotes to eukaryotes and from unicellular organisms to multicellular organisms through evolution . So far no alternative process to achieve such
11661-614: The Satipatthana Sutta and the Dhyana sutras , and through oral teacher-student transmissions. These ancient practices are supplemented with various distinct interpretations of, and developments in, these practices. The Theravāda tradition stresses the development of samatha and vipassana , postulating over fifty methods for developing mindfulness based on the Satipatthana Sutta , and forty for developing concentration based on
11830-593: The Hare Krishna tradition , and Jainism . Buddhist prayer beads also have 108 beads, but hold a different meaning. In Buddhism, there are 108 human passions that impede enlightenment. Each bead is counted once as a person recites a mantra until the person has gone all the way around the mala. The Muslim misbaha has 99 beads. There is also quite a variance when it comes to materials used for beads. Beads made from seeds of rudraksha trees are considered sacred by devotees of Shiva , while followers of Vishnu revere
11999-626: The Hatha Yoga Pradipika , the development of Bhakti yoga as a major form of meditation, and Tantra . Another important Hindu yoga text is the Yoga Yajnavalkya , which makes use of Hatha Yoga and Vedanta Philosophy. The Bhagavata Purana emphasizes that mantra meditation is a key practice for achieving liberation; practitioners can achieve a direct vision of the divine. The text integrates both Vedic and tantric elements, where mantras are not only seen as sacred sounds but as embodiment of
12168-750: The Rio Tinto river in Spain. NASA officials soon distanced NASA from the scientists' claims, and Stoker herself backed off from her initial assertions. In November 2011, NASA launched the Mars Science Laboratory that landed the Curiosity rover on Mars. It is designed to assess the past and present habitability on Mars using a variety of scientific instruments. The rover landed on Mars at Gale Crater in August 2012. A group of scientists at Cornell University started
12337-543: The Star Trek franchise. Spock wore the symbol during important gatherings and ceremonies as part of his dress uniform . After appearing for the first time in the TOS episode, " Is There in Truth No Beauty? ", it appeared in Spock's quarters in Star Trek II: The Wrath of Khan , Star Trek III: The Search for Spock , and Star Trek VI: The Undiscovered Country . In the series Star Trek: Enterprise , T'Pol
12506-475: The Star Trek: The Original Series episode " Amok Time ". Words and dialogue are heard in the feature films Star Trek: The Motion Picture , Star Trek II: The Wrath of Khan , Star Trek III: The Search for Spock and Star Trek V: The Final Frontier . Linguist Marc Okrand is credited for creating the Vulcan spoken language for Star Trek II: The Wrath of Khan . As in most of the films,
12675-467: The TOS episode " The Man Trap ", while Uhura is attempting to make conversation with Spock, he informs her that Vulcan has no moon. According to Star Trek canon, the planet orbits 40 Eridani A . The authorized Star Trek book Star Trek: Star Charts and Roddenberry himself give this location. In addition, Commander Tucker's statement in the Star Trek: Enterprise episode " Home " that Vulcan
12844-441: The TOS episode " The Naked Time ". The mechanics of the pinch have never been explained. While practiced mainly by Vulcans, it is apparently not exclusive to their race. Jonathan Archer and Jean-Luc Picard both use the technique after becoming involved in Vulcan telepathic rituals (Archer holding the katra of Surak, Picard having undergone a mind-meld with Sarek ). Seven of Nine is depicted as capable of using this ability in
13013-684: The Upanishads , and meditation plays a salient role in the contemplative repertoire of Jainism , Buddhism and Hinduism . Meditation-like techniques are also known in Judaism, Christianity and Islam, in the context of remembrance of and prayer and devotion to God. Asian meditative techniques have spread to other cultures where they have found application in non-spiritual contexts, such as business and health. Meditation may significantly reduce stress, fear, anxiety, depression, and pain, and enhance peace, perception , self-concept , and well-being . Research
13182-592: The Vipassana movement , with many non-Buddhists taking-up meditative practices. The modernized concept of mindfulness (based on the Buddhist term sati ) and related meditative practices have in turn led to mindfulness based therapies . Dhyana , while often presented as a form of focused attention or concentration, as in Buddhagosa's Theravada classic the Visuddhimagga ("Path of purification", 5th c. CE), according to
13351-652: The Visuddhimagga . The Tibetan tradition incorporated Sarvastivada and Tantric practices, wedded with Madhyamaka philosophy, and developed thousands of visualization meditations. Via the Dhyana sutras, which are based on the Sarvastivada-tradition, the Zen-tradition incorporated mindfulness and breath-meditation. Downplaying the "petty complexities" of satipatthana and the body-recollections (but maintaining
13520-459: The hydrothermal vents found on the ocean floor are known to support many chemosynthetic processes which allow organisms to utilize energy through reduced chemical compounds that fix carbon. In return, these reactions will allow for organisms to live in relatively low oxygenated environments while maintaining enough energy to support themselves. The early Earth environment was reducing and therefore, these carbon fixing compounds were necessary for
13689-483: The "outer limbs," include ethical discipline ( yamas ), rules ( niyamas ), physical postures ( āsanas ), and breath control ( prāṇāyama ). The fifth, withdrawal from the senses ( pratyāhāra ), transitions into the "inner limbs" that are one-pointedness of mind ( dhāraṇā ), meditation ( dhyāna ), and finally samādhi . Later developments in Hindu meditation include the compilation of Hatha Yoga (forceful yoga) compendiums like
13858-797: The 12th-century monk Guigo II , before which the Greek word theoria was used for the same purpose. Apart from its historical usage, the term meditation was introduced as a translation for Eastern spiritual practices , referred to as dhyāna in Hinduism , Buddhism , and Jainism , which comes from the Sanskrit root dhyai , meaning to contemplate or meditate. The term "meditation" in English may also refer to practices from Islamic Sufism , or other traditions such as Jewish Kabbalah and Christian Hesychasm . Meditation has proven difficult to define as it covers
14027-485: The 15th century, acknowledged the possibility Jesus could have visited extraterrestrial worlds to redeem their inhabitants. Nicholas of Cusa wrote in 1440 that Earth is "a brilliant star" like other celestial objects visible in space; which would appear similar to the Sun , from an exterior perspective, due to a layer of "fiery brightness" in the outer layer of the atmosphere. He theorised all extraterrestrial bodies could be inhabited by men, plants, and animals, including
14196-667: The Holosuite ", Captain Solok and his Vulcan team, the Logicians, wear ball caps featuring the IDIC symbol. The fictional Vulcan homeworld, also named Vulcan, was visited several times in the Star Trek series and feature films. The inhabitants are known as "Vulcans" or "Vulcanians". First seen in the TOS episode " Amok Time ", Vulcan, a Class M planet , is an arid world with a thinner atmosphere than Earth. Upon beaming down, McCoy states "'Hot as Vulcan.' Now I understand what that phrase means." In
14365-471: The Solar System at a speed of 50,000 kilometers per hour, if it headed towards the Alpha Centauri system, the closest one to Earth at 4.4 light years, it would reach it in 100,000 years. Under current technology such systems can only be studied by telescopes, which have limitations. It is estimated that dark matter has a larger amount of combined matter than stars and gas clouds, but as it plays no role on
14534-475: The Sun. Descartes wrote that there was no means to prove the stars were not inhabited by "intelligent creatures", but their existence was a matter of speculation. When considering the atmospheric composition and ecosystems hosted by extraterrestrial bodies, extraterrestrial life can seem more speculation than reality, due to the harsh conditions and disparate chemical composition of the atmospheres, when compared to
14703-616: The University of Oxford analysed it from the perspective of evolutionary theory and wrote in a study in the International Journal of Astrobiology that aliens may be similar to humans. The planetary context would also have an influence: a planet with higher gravity would have smaller animals, and other types of stars can lead to non-green photosynthesizers . The amount of energy available would also affect biodiversity , as an ecosystem sustained by black smokers or hydrothermal vents would have less energy available than those sustained by
14872-477: The Vulcan has been shot through the chest: "Lucky his heart's where his liver should be, or he'd be dead now." Vulcans are vegetarians by choice and were omnivores in ages past. It is a Vulcan custom for guests in the home to prepare meals for their hosts. Vulcans are said to not drink alcohol, though they are often depicted as doing so. In an episode of Star Trek: Deep Space Nine , Quark alludes to Vulcans becoming inebriated by ingesting chocolate . This
15041-549: The Vulcans of many different ages that are not seven years apart. If a mate is not available, there are other ways to relieve the effects of the pon farr, including meditation , violence, "shock", and simulation. Vulcans are typically depicted as stronger, faster, and longer-lived than humans. This is hypothesized to be due to the increased gravity on Vulcan (1.4 g ). However, Vulcans are less cold-tolerant than humans. There are instances of them living over 220 years. Having evolved on
15210-537: The Vulcans reunified with their ancient cousins, the Romulans , the Vulcan homeworld was renamed Ni'Var . Ni'Var had seceded from the Federation (due to the apocalyptic event known as The Burn); in the later episode "All Is Possible", Ni'Var rejoins the Federation. In the 2009 film Star Trek , an alternate timeline is created in which Vulcan is destroyed by Nero, a Romulan renegade. By the time of Star Trek Into Darkness
15379-481: The actors filmed their lines in English which was later dubbed with the Vulcan translation. The treatment of Vulcan names has been erratic throughout Star Trek ' s production history. Early on, female Vulcans were typically given names beginning with "T" followed by an apostrophe then a "p". The earliest reference to Vulcan names following a set pattern dates back to a May 3, 1966 memo from TOS producer Robert H. Justman to Gene Roddenberry (later reprinted in
15548-433: The adoption of Surak 's code of emotional control. Surak's ideas were that all Vulcans should suppress emotions, for the safety of the species. Before him, Vulcans were dangerously raging, emotional, war-like and religiously fanatical, to the point that it could have threatened the continuation of their society and species . Then, around the 4th century BC, he created a system revolving around these ideas, intended to create
15717-410: The area surrounding these hydrothermal vents which can suggest that some form of life can be supported even in the harshest of environments like the other planets in the solar system. The aspects of these harsh environments that make them ideal for the origin of life on Earth, as well as the possibility of creation of life on other planets, is the chemical reactions forming spontaneously. For example,
15886-568: The atom speeds, either too fast or too slow, make it difficult for specific ones to meet and start chemical reactions. A liquid medium also allows the transport of nutrients and substances required for metabolism. Sufficient quantities of carbon and other elements, along with water, might enable the formation of living organisms on terrestrial planets with a chemical make-up and temperature range similar to that of Earth. Life based on ammonia rather than water has been suggested as an alternative, though this solvent appears less suitable than water. It
16055-423: The awareness of immanent death), the early Chan-tradition developed the notions or practices of wu nian ("no thought, no fixation on thought, such as one's own views, experiences, and knowledge") and fēi sīliàng (非思量, Japanese: hishiryō , "nonthinking"); and kanxin ("observing the mind") and shou-i pu i (守一不移, "maintaining the one without wavering," turning the attention from the objects of experience, to
16224-451: The benefit of others". Studies suggest the potential of psychedelics , such as psilocybin and DMT , to enhance meditative training. The history of meditation is intimately bound up with the religious context within which it was practiced. Rossano suggested that the emergence of the capacity for focused attention, an element of many methods of meditation, may have contributed to the latest phases of human biological evolution. Some of
16393-582: The book The Making of Star Trek ) in which Justman recommended that all Vulcan names begin with "SP" and end with "K", and have exactly five letters. (It is clear from the context of the book, however, that the memo was intended as a joke, as the series of memos ends up discussing the pronunciation of such names as "Spook", "Spilk" and "Spork".) Only non-canonical sources have provided any Vulcans with family names, which are usually spoken of as defying attempts at both human pronunciation, especially with English-language phonemes, and human typesetting, especially with
16562-423: The ceremony, the whole thing. The biological urge. You must, but any other time is any other emotion—humanoid emotion—when you're in love. When you want to, you know when the urge is there, you do it. This every-seven-years business was taken too literally by too many people who don't stop and understand. We didn't mean it only every seven years. I mean, every seven years would be a little bad, and it would not explain
16731-516: The characters of the modern Latin alphabet used for the English language. Hence, no canonical source has given any family names to any Vulcan characters, and, indeed, every one of the personal names previously mentioned is officially described as being only Latin-alphabetical and English-phonetic approximations of the real ones. In the TOS episode " This Side of Paradise ", Spock is asked if he has another name, to which he replies "You couldn't pronounce it." Vulcans practice arranged marriage , in which
16900-523: The codified rules and live together in monasteries in specific cultural settings that go along with their meditative practices. Dictionaries give both the original Latin meaning of "think[ing] deeply about (something)", as well as the popular usages of "focusing one's mind for a period of time", "the act of giving your attention to only one thing, either as a religious activity or as a way of becoming calm and relaxed", and "to engage in mental exercise (such as concentrating on one's breathing or repetition of
17069-402: The cold temperatures would make such chemistry take place at a very slow pace. Water is rock-solid on the surface, but Titan does have a subsurface water ocean like several other moons. However, it is of such a great depth that it would be very difficult to access it for study. The science that searches and studies life in the universe, both on Earth and elsewhere, is called astrobiology . With
17238-477: The core practices of body contemplations ( repulsiveness and cemetery contemplations ) and anapanasati ( mindfulness of in-and-out breathing) culminating in jhāna / dhyāna or samādhi . While most classical and contemporary Buddhist meditation guides are school-specific, the root meditative practices of various body recollections and breath meditation have been preserved and transmitted in almost all Buddhist traditions , through Buddhist texts like
17407-399: The couple to remain on Vulcan for at least one Vulcan year before conducting off-world travel, though it is possible to defer this requirement until a later date, upon negotiation with the male's family. The state of pon farr is not required for marriage to occur. A Vulcan female can challenge the proposed bonding by calling for "koon-ut-kal-if-fee", meaning "marriage or challenge", in which
17576-517: The creation or maintenance of extraterrestrial life. However, there has been much historical evidence that some of the earliest and most basic forms of life on Earth originated in some extreme environments that seem unlikely to have harbored life at least at one point in Earth's history. Fossil evidence as well as many historical theories backed up by years of research and studies have marked environments like hydrothermal vents or acidic hot springs as some of
17745-631: The deity. This approach reflects a shift from the impersonal meditation on the sound-form of Brahman ( Om ) in the Upanishads to a personal, devotional focus on Krishna in the Bhagavata Purana. Jainism has three elements called the Ratnatraya ("Three Jewels"): right perception and faith, right knowledge and right conduct. Meditation in Jainism aims to reach and to remain in the pure state of soul which
17914-572: The desert for a specific period of time. Not all children survive this rite of passage. T'Pol underwent the ritual, while Tuvok experienced a variation known as the "tal'oth". The Kahs-wan was first introduced in the Star Trek: The Animated Series episode " Yesteryear ", in which Spock's experience as a child was detailed. Contrary to the Vulcan image of expressing no emotion, family bonds can be strong and affectionate just as they are for humans. Tuvok expressed his love for his wife on
18083-448: The development of insight and wisdom ( Prajñā ) which is the quality of mind that can "clearly see" ( vi-passana ) the nature of phenomena. What exactly is to be seen varies within the Buddhist traditions. In Theravada, all phenomena are to be seen as impermanent , suffering , not-self and empty . When this happens, one develops dispassion ( viraga ) for all phenomena, including all negative qualities and hindrances and lets them go. It
18252-444: The difficulty for life to appear was not the temperature, but the scarcity of free heavy elements. Planetary systems emerged, and the first organic compounds may have formed in the protoplanetary disk of dust grains that would eventually create rocky planets like Earth. Although Earth was in a molten state after its birth and may have burned any organics that fell in it, it would have been more receptive once it cooled down. Once
18421-526: The discipline of kolinahr have completely purged all emotions from their minds. Spock, in Star Trek: The Motion Picture , attempts to achieve kolinahr , but ultimately fails to do so. Other Vulcans who did not believe in war but still wanted to embrace emotions made different choices. A group of renegade Vulcans who believed in this was encountered in the Star Trek: Enterprise episode " Fusion ", while Spock's half-brother Sybok , seen in
18590-582: The earliest references to meditation, as well as proto- Samkhya , are found in the Upanishads of India. According to Wynne, the earliest clear references to meditation are in the middle Upanishads and the Mahabharata (including the Bhagavad Gita ). According to Gavin Flood , the earlier Brihadaranyaka Upanishad is describing meditation when it states that "Having become calm and concentrated, one perceives
18759-413: The end, the star blows much of its content back into the stellar medium, where it would join clouds that would eventually become new generations of stars and planets. Many of those materials are the raw components of life on Earth. As this process takes place in all the universe, said materials are ubiquitous in the cosmos and not a rarity from the Solar System. Earth is a planet in the Solar System ,
18928-475: The episode of Voyager " The Raven ". The android Data also displayed this ability in the TNG episode " Unification, Part II ," which Spock described as "not bad." In Star Trek: Discovery, Michael Burnham does the nerve pinch on Captain Philippa Georgiou and commits mutiny. The neck pinch itself (referred to in scripts as "FSNP", or "Famous Spock Neck Pinch") was created by Leonard Nimoy, who objected to
19097-711: The field of awareness (so-called mindfulness meditation ), or both specific focal points and the field of awareness. Focused methods include paying attention to the breath , to an idea or feeling (such as mettā – loving-kindness), to a kōan , or to a mantra (such as in transcendental meditation ), and single point meditation. Open monitoring methods include mindfulness , shikantaza and other awareness states. Another typology divides meditation approaches into concentrative, generative, receptive and reflective practices: The Buddhist tradition often divides meditative practice into samatha , or calm abiding, and vipassana , insight. Mindfulness of breathing ,
19266-495: The film Star Trek V: The Final Frontier , was also fully emotional. An episode of Enterprise titled " E² " featured an elderly T'Pol in an alternative timeline who had embraced emotion and allowed her half-human son, Lorian, to do likewise. In the 1st pilot episode, " The Cage ", Spock showed much more emotion. For the second pilot, " Where No Man Has Gone Before ", Number One – Spock's superior officer, who showed little emotion – was removed, and it
19435-403: The first hominids appeared 60 million years ago. Life on other planets may have started, evolved, given birth to extraterrestrial intelligences, and perhaps even faced a planetary extinction event millions or even billions of years ago. The brief times of existence of Earth's species, when considered from a cosmic perspective, may suggest that extraterrestrial life may be equally fleeting under such
19604-462: The first places that life could have originated on Earth. These environments can be considered extreme when compared to the typical ecosystems that the majority of life on Earth now inhabit, as hydrothermal vents are scorching hot due to the magma escaping from the Earth's mantle and meeting the much colder oceanic water. Even in today's world, there can be a diverse population of bacteria found inhabiting
19773-410: The formation of planets, eventually arriving on young planets early in their formation. In December 2023, astronomers reported the first time discovery, in the plumes of Enceladus , moon of the planet Saturn , of hydrogen cyanide , a possible chemical essential for life as we know it, as well as other organic molecules , some of which are yet to be better identified and understood. According to
19942-451: The giant planets themselves are highly unlikely to have life, there is much hope to find it on moons orbiting these planets. Europa , from the Jovian system, has a subsurface ocean below a thick layer of ice. Ganymede and Callisto also have subsurface oceans, but life is less likely in them because water is sandwiched between layers of solid ice. Europa would have contact between the ocean and
20111-404: The habitable zones vary according to the type of star, and even the solar activity of each specific star influences the local habitability. The type of star also defines the time the habitable zone will exist, as its presence and limits will change along with the stars stellar evolution. The Big Bang took place 14 billion years ago, the Solar System was formed 4 and a half billion years ago, and
20280-433: The hall monitor or given little taps if they requested to be hit. Nobody asked about the 'meaning' of the stick, nobody explained, and nobody ever complained about its use. Neuroscientist and long-time meditator Richard Davidson has expressed the view that having a narrative can help the maintenance of daily practice. For instance, he himself prostrates to the teachings, and meditates "not primarily for my benefit, but for
20449-571: The hierarchy of lifeforms from Earth for simplicity, as it is the only one known to exist. The first basic requirement for life is an environment with non-equilibrium thermodynamics , which means that the thermodynamic equilibrium must be broken by a source of energy. The traditional sources of energy in the cosmos are the stars, such as for life on Earth, which depends on the energy of the sun. However, there are other alternative energy sources, such as volcanoes , plate tectonics , and hydrothermal vents . There are ecosystems on Earth in deep areas of
20618-459: The incorrect insights one indulges, which eventually develops right insight. In vipaka vichāya , one reflects on the eight causes or basic types of karma . In sansathan vichāya , one thinks about the vastness of the universe and the loneliness of the soul. Buddhists pursue meditation as part of the path toward awakening and nirvana . The closest words for meditation in the classical languages of Buddhism are bhāvanā ("development"), and
20787-440: The life-abundant Earth. However, there are many extreme and chemically harsh ecosystems on Earth that do support forms of life and are often hypothesized to be the origin of life on Earth. Hydrothermal vents , acidic hot springs, and volcanic lakes are examples of life forming under difficult circumstances, provide parallels to the extreme environments on other planets and support the possibility of extraterrestrial life. Since
20956-514: The meditation process itself. Techniques are broadly classified into focused (or concentrative) and open monitoring methods. Focused methods involve attention to specific objects like breath or mantras , while open monitoring includes mindfulness and awareness of mental events. Meditation is practiced in numerous religious traditions, though it is also practised independently from any religious or spiritual influences for its health benefits. The earliest records of meditation ( dhyana ) are found in
21125-543: The medium. To create DNA , RNA , or a close analog, such an element should be able to bind its atoms with many others, creating complex and stable molecules. It should be able to create at least three covalent bonds: two for making long strings and at least a third to add new links and allow for diverse information. Only nine elements meet this requirement: boron , nitrogen , phosphorus , arsenic , antimony (three bonds), carbon , silicon , germanium and tin (four bonds). As for abundance, carbon, nitrogen, and silicon are
21294-537: The memories. Some species are able to resist mind melds. The quad-lobed brain structure of Ferengi make them unable to be telepathically read by other species, and with sufficient training and mental discipline, high-level Cardassian military personnel and/or agents of the Obsidian Order are able to resist mind melds used to extract information. For example, when Gul Dukat was captured by the Maquis, he successfully resisted
21463-478: The mid-20th century, active research has taken place to look for signs of extraterrestrial life, encompassing searches for current and historic extraterrestrial life, and a narrower search for extraterrestrial intelligent life . Depending on the category of search, methods range from analysis of telescope and specimen data to radios used to detect and transmit communications. The concept of extraterrestrial life, and particularly extraterrestrial intelligence, has had
21632-429: The mind of Dr. McCoy before sacrificing his life. In Star Trek III: The Search for Spock , a mind meld ritual, the "fal tor pan" ("re-fusion"), removed the katra from McCoy and implanted it into Spock's regenerated body. The ritual was successful, though it carried risks for both. Vulcans have their own language in the Star Trek universe. Several words are heard throughout the various television series starting with
21801-523: The mind, while vipassana enables one to see, explore and discern "formations" (conditioned phenomena based on the five aggregates ). According to this understanding, which is central to Theravada orthodoxy but also plays a role in Tibetan Buddhism , through the meditative development of serenity, one is able to weaken the obscuring hindrances and bring the mind to a collected, pliant, and still state ( samadhi ). This quality of mind then supports
21970-631: The modern scientific community . Some of the difficulty in precisely defining meditation has been in recognizing the particularities of the many various traditions ; and theories and practice can differ within a tradition. Taylor noted that even within a faith such as "Hindu" or "Buddhist", schools and individual teachers may teach distinct types of meditation. Ornstein noted that "Most techniques of meditation do not exist as solitary practices but are only artificially separable from an entire system of practice and belief." For instance, while monks meditate as part of their everyday lives, they also engage in
22139-566: The most abundant ones in the universe, far more than the others. On Earth's crust the most abundant of those elements is silicon, in the Hydrosphere it is carbon and in the atmosphere, it is carbon and nitrogen. Silicon, however, has disadvantages over carbon. The molecules formed with silicon atoms are less stable, and more vulnerable to acids, oxygen, and light. An ecosystem of silicon-based lifeforms would require very low temperatures, high atmospheric pressure , an atmosphere devoid of oxygen, and
22308-497: The native planet that may not be caused by natural causes. There are three main types of techno-signatures considered: interstellar communications , effects on the atmosphere, and planetary-sized structures such as Dyson spheres . Organizations such as the SETI Institute search the cosmos for potential forms of communication. They started with radio waves , and now search for laser pulses as well. The challenge for this search
22477-502: The nature of mind, the perceiving subject itself, which is equated with Buddha-nature . The Silk Road transmission of Buddhism introduced Buddhist meditation to other Asian countries, reaching China in the 2nd century CE, and Japan in the 6th century CE. In the modern era, Buddhist meditation techniques have become popular in the wider world, due to the influence of Buddhist modernism on Asian Buddhism, and western lay interest in Zen and
22646-418: The ocean that do not receive sunlight, and take energy from black smokers instead. Magnetic fields and radioactivity have also been proposed as sources of energy, although they would be less efficient ones. Life on Earth requires water in a liquid state as a solvent in which biochemical reactions take place. It is highly unlikely that an abiogenesis process can start within a gaseous or solid medium:
22815-605: The omnipresent and non-dual Ātman - Brahman . In the dualistic Yoga school and Samkhya , the Self is called Purusha , a pure consciousness undisturbed by Prakriti , 'nature'. Depending on the tradition, the liberative event is named moksha , vimukti or kaivalya . One of the most influential texts of classical Hindu Yoga is Patañjali 's Yoga sutras (c. 400 CE), a text associated with Yoga and Samkhya and influenced by Buddhism, which outlines eight limbs leading to kaivalya ("aloneness") or inner awareness. The first four, known as
22984-568: The origin of extraterrestrial life. The Solar System has a wide variety of planets, dwarf planets, and moons, and each one is studied for its potential to host life. Each one has its own specific conditions that may benefit or harm life. So far, the only lifeforms found are those from Earth. No extraterrestrial intelligence other than humans exists or has ever existed within the Solar System. Astrobiologist Mary Voytek points out that it would be unlikely to find large ecosystems, as they would have already been detected by now. The inner Solar System
23153-468: The others are used in other biological processes. The studies ruled out pollution of the meteorites on Earth, as those components would not be freely available the way they were found in the samples. This discovery suggests that several organic molecules that serve as building blocks of life may be generated within asteroids and comets. In October 2011, scientists reported that cosmic dust contains complex organic compounds ("amorphous organic solids with
23322-547: The planetary core ceased to generate a magnetic field, solar winds removed the atmosphere and the planet became vulnerable to solar radiation. Ancient life-forms may still have left fossilised remains, and microbes may still survive deep underground. As mentioned, the gas giants and ice giants are unlikely to contain life. The most distant solar system bodies, found in the Kuiper Belt and outwards, are locked in permanent deep-freeze, but cannot be ruled out completely. Although
23491-511: The precise differences that lead to beneficial or harmful conditions for life. And despite the conditions against life on Venus , there are suspicions that microbial life-forms may still survive in high-altitude clouds. Mars is a cold and almost airless desert, inhospitable to life. However, recent studies revealed that water on Mars used to be quite abundant, forming rivers, lakes, and perhaps even oceans. Mars may have been habitable back then, and life on Mars may have been possible. But when
23660-452: The probability of the existence of extraterrestrial civilisations and the lack of evidence for such civilisations is known as the Fermi paradox . Dennis W. Sciama claimed that life's existence in the universe depends on various fundamental constants. Zhi-Wei Wang and Samuel L. Braunstein suggest that a random universe capable of supporting life is likely to be just barely able to do so, giving
23829-476: The probe to study ocean water. Still, Cassini detected complex organic molecules, salts, evidence of hydrothermal activity, hydrogen, and methane. Titan is the only celestial body in the Solar System besides Earth that has liquid bodies on the surface. It has rivers, lakes, and rain of hydrocarbons, methane, and ethane, and even a cycle similar to Earth's water cycle . This special context encourages speculations about lifeforms with different biochemistry, but
23998-438: The problems of survival of life on other planets. However, he also considered that the conditions found on Mars were incompatible with carbon based life. Even if extraterrestrial life is based on carbon and uses water as a solvent, like Earth life, it may still have a radically different biochemistry . Life is generally considered to be a product of natural selection . It has been proposed that to undergo natural selection
24167-433: The researchers, "these [newly discovered] compounds could potentially support extant microbial communities or drive complex organic synthesis leading to the origin of life ." Although most searches are focused on the biology of extraterrestrial life, an extraterrestrial intelligence capable enough to develop a civilization may be detectable by other means as well. Technology may generate technosignatures , effects on
24336-426: The right conditions on Earth were met, life started by a chemical process known as abiogenesis . Alternatively, life may have formed less frequently, then spread – by meteoroids , for example – between habitable planets in a process called panspermia . During most of its stellar evolution stars combine hydrogen nuclei to make helium nuclei by stellar fusion, and the comparatively lighter weight of helium allows
24505-405: The right side of the equation are agreed as speculative and open to substitution: 10,000 = 5 ⋅ 0.5 ⋅ 2 ⋅ 1 ⋅ 0.2 ⋅ 1 ⋅ 10,000 {\displaystyle 10{,}000=5\cdot 0.5\cdot 2\cdot 1\cdot 0.2\cdot 1\cdot 10{,}000} The Drake equation has proved controversial since, although it is written as
24674-422: The rocky surface, which helps the chemical reactions. It may be difficult to dig so deep in order to study those oceans, though. Enceladus , a tiny moon of Saturn with another subsurface ocean, may not need to be dug, as it releases water to space in eruption columns . The space probe Cassini flew inside one of these, but could not make a full study because NASA did not expect this phenomenon and did not equip
24843-528: The same samples suggests that a non-biological reaction is a more likely hypothesis. In February 2005 NASA scientists reported they may have found some evidence of extraterrestrial life on Mars. The two scientists, Carol Stoker and Larry Lemke of NASA's Ames Research Center , based their claim on methane signatures found in Mars's atmosphere resembling the methane production of some forms of primitive life on Earth, as well as on their own study of primitive life near
25012-473: The self ( Ātman ) within oneself" (BU 4.4.23). There are many schools and styles of meditation within Hinduism . In pre-modern and traditional Hinduism , Yoga and Dhyana are practised to recognize 'pure awareness', or 'pure consciousness', undisturbed by the workings of the mind, as one's eternal self. In Advaita Vedanta jivatman , individual self, is recognized as illusory, and in Reality identical with
25181-437: The ship's crew, but knew that budget restraints would limit make-up choices. He chose actor Leonard Nimoy because of his "high Slavic cheekbones and interesting face" and "with those cheekbones some sort of pointed ear might go well." Nimoy later commented that Roddenberry felt the presence of an alien would "establish that we were in the 23rd century and that interplanetary travel was an established fact." The Vulcan salutation
25350-399: The star to release the extra energy. The process continues until the star uses all of its available fuel, with the speed of consumption being related to the size of the star. During its last stages, stars start combining helium nuclei to form carbon nuclei. The higher-sized stars can further combine carbon nuclei to create oxygen and silicon, oxygen into neon and sulfur, and so on until iron. In
25519-482: The stellar evolution of stars and planets, it is usually not taken into account by astrobiology. There is an area around a star, the circumstellar habitable zone or "Goldilocks zone", where water may be at the right temperature to exist in liquid form at a planetary surface. This area is neither too close to the star, where water would become steam, nor too far away, where water would be frozen as ice. However, although useful as an approximation, planetary habitability
25688-477: The strictly-logical Spock, and suggested the neck pinch as a less-emotional alternative. In Star Trek , the IDIC (Infinite Diversity in Infinite Combinations) has become a symbol of Vulcan equality philosophy. It is symbolized by the "Kol-Ut-Shan", a pendant of yellow and white gold with a circle and triangle resting upon each other, and adorned with a white jewel in the center. The Vulcan IDIC pendant
25857-508: The study of Earth's life, the only known form of life, astrobiology seeks to study how life starts and evolves and the requirements for its continuous existence. This helps to determine what to look for when searching for life in other celestial bodies. This is a complex area of study, and uses the combined perspectives of several scientific disciplines, such as astronomy , biology , chemistry , geology , oceanography , and atmospheric sciences . The scientific search for extraterrestrial life
26026-539: The survival and possible origin of life on Earth . With the little amount of information that scientists have found regarding the atmosphere on other planets in the Milky Way galaxy and beyond, the atmospheres are most likely reducing or with very low oxygen levels, especially when compared with Earth's atmosphere. If there were the necessary elements and ions on these planets, the same carbon fixing, reduced chemical compounds occurring around hydrothermal vents could also occur on these planets' surfaces and possibly result in
26195-631: The tendency of technologically advanced human societies to enslave or destroy less advanced societies – argue it may be dangerous to actively draw attention to Earth. Initially, after the Big Bang the universe was too hot to allow life. 15 million years later , it cooled to temperate levels, but the elements that make up living things did not exist yet. The only freely available elements at that point were hydrogen and helium . Carbon and oxygen (and later, water ) would not appear until 50 million years later, created through stellar fusion. At that point,
26364-413: The turn to peace that saved their civilization. He tells Kirk that he will not fight. Spock says that he has fought, and will fight again, but that he, too, is a "Vulcan, bred to peace." Vulcans are capable of a technique known as the " Vulcan nerve pinch " or "neck pinch", which targets a location on the neck between the head and the shoulder that renders the victim unconscious. The pinch was first seen in
26533-603: The universe. The science of extraterrestrial life is known as astrobiology . Speculation about the possibility of inhabited worlds beyond Earth dates back to antiquity. Early Christian writers discussed the idea of a "plurality of worlds" as proposed by earlier thinkers such as Democritus ; Augustine references Epicurus 's idea of innumerable worlds "throughout the boundless immensity of space" in The City of God . Pre-modern writers typically assumed extraterrestrial "worlds" are inhabited by living beings. William Vorilong , in
26702-445: The unusual properties of the meteorite were eventually explained as the result of inorganic processes, the controversy over its discovery laid the groundwork for the development of astrobiology. An experiment on the two Viking Mars landers reported gas emissions from heated Martian soil samples that some scientists argue are consistent with the presence of living microorganisms. Lack of corroborating evidence from other experiments on
26871-405: The use of a defined technique, logic relaxation, and a self-induced state/mode. Other criteria deemed important [but not essential] involve a state of psychophysical relaxation, the use of a self-focus skill or anchor, the presence of a state of suspension of logical thought processes, a religious/spiritual/philosophical context, or a state of mental silence. ... It is plausible that meditation
27040-523: The way other techniques such as from Zen and Qigong are practiced by experienced meditators "once they had become effortless and automatic through years of practice." Asanas or body postures such as padmasana (full-lotus , half-lotus ), cross-legged sitting, seiza , and kneeling positions are popular meditative postures in Hinduism, Buddhism and Jainism , although other postures such as sitting, supine (lying), and standing are also used. Meditation
27209-644: The wood that comes from the Tulsi plant, also known as Holy Basil. The Buddhist literature has many stories of Enlightenment being attained through disciples being struck by their masters. T. Griffith Foulk recounts how the encouragement stick was an integral part of the Zen practice when he trained: In the Rinzai monastery where I trained in the mid-1970s, according to an unspoken etiquette, monks who were sitting earnestly and well were shown respect by being hit vigorously and often; those known as laggards were ignored by
27378-447: Was "the Vulcan way, when the body's end is near." Dr Julian Bashir in the DS9 episode " The Passenger " referred to this phenomenon as "synaptic pattern displacement". The ENT Season 4 trilogy of episodes (" The Forge ", " Awakening ", and " Kir'Shara ") reveal some of the history of mind-melding and the journey of the katra of Surak to modern times. Katra can also be used to transfer
27547-504: Was decided that Spock would take on those traits. Vulcan emotions are seemingly more intense than those of humans. In the TNG episode Sarek , Ambassador Sarek warns Captain Picard that "Vulcan emotions are extremely intense; we have learned to suppress them", and that Picard would be overwhelmed by Sarek's unrestrained emotions due to the effects of Bendii syndrome while the two are linked during
27716-404: Was designed by Gene Roddenberry as a marketing premium to be sold through mail order to Star Trek fans. As early as the end of the first season, fans of the show had begun writing the studio asking for copies of the scripts, film clip frames, etc., and these were soon sold through Roddenberry's mail order company, Lincoln Enterprises . As evidenced in some of his letters and memos, Roddenberry
27885-449: Was fond of circle-and-triangle designs and had wanted to use them as early as the first season's " The Return of the Archons ". As reported by Inside Star Trek editor Ruth Berman, "ardent rock hound and amateur lapidary " Roddenberry came up with the Vulcan philosophy after he presented Leonard Nimoy with a unique hand-crafted piece of jewelry, a pendant of a polished yellow gold circle and
28054-417: Was habitable. It is unclear if life and intelligent life are ubiquitous in the cosmos or rare. The hypothesis of ubiquitous extraterrestrial life relies on three main ideas. The first one, the size of the universe allows for plenty of planets to have a similar habitability to Earth, and the age of the universe gives enough time for a long process analog to the history of Earth to happen there. The second
28223-406: Was only worked into the episode " Is There in Truth No Beauty? " as an afterthought. The actors all knew it was a mere advertising toy. Reportedly, Leonard Nimoy was asked to wear it and refused, so it was passed on to Shatner; when he also refused, Nimoy reluctantly agreed to wear it. At the last minute, Roddenberry sent down several pages of new script for the dinner scene, in which Spock was to give
28392-399: Was reported. Scientists search for biosignatures within the Solar System by studying planetary surfaces and examining meteorites . Some claim to have identified evidence that microbial life has existed on Mars. In 1996, a controversial report stated that structures resembling nanobacteria were discovered in a meteorite, ALH84001 , formed of rock ejected from Mars . Although all
28561-480: Was the only way she could legally divorce Spock. While most Vulcan marriages are arranged in childhood, adult Vulcans who have no mates may also declare the "koon-ut-so-lik", the ritual Vulcan marriage proposal. As with arranged marriages, the Vulcan being proposed to may accept or challenge the union. It is customary for Vulcan children to undertake an initiation ordeal known as the "Kahs-wan" (sometimes spelled Kaswahn), in which they are left to fend for themselves in
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