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147-441: The player designs, builds and maintains a space station, and must keep its inhabitants happy while fending off alien threats. Spacebase DF-9 was one of several ideas presented for voting for Double Fine's Amnesia Fortnight 2012 project, where users would be able to vote for the game concepts they felt they would want to play the most. Spacebase DF-9 was an idea presented by designer-programmer JP LeBreton. The title received

294-458: A heuristic device , Augustine thought the actual event of creation would be incomprehensible by humans and therefore needed to be translated. Augustine also does not envision original sin as causing structural changes in the universe, and even suggests that the bodies of Adam and Eve were already created mortal before the Fall . Apart from his specific views, Augustine recognized that interpreting

441-416: 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

588-530: A busy schedule made up of preparing sermons and preaching at other churches besides his own. When serving as the Bishop of Hippo, his goal was to minister to individuals in his congregation and he would choose the passages that the church planned to read every week. As bishop, he believed that it was his job to interpret the work of the Bible. He wrote his autobiographical Confessions in 397–398. His work The City of God

735-611: 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

882-515: A classic of Christian theology and a key text in the history of autobiography . This work is an outpouring of thanksgiving and penitence. Although it is written as an account of his life, the Confessions also talks about the nature of time, causality, free will, and other important philosophical topics. The following is taken from that work: Belatedly I loved thee, O Beauty so ancient and so new, belatedly I loved thee. For see, thou wast within and I

1029-718: A disappointing meeting with the Manichaean bishop, Faustus of Mileve , a key exponent of Manichaean theology, started Augustine's scepticism of Manichaeanism. In Rome, he reportedly turned away from Manichaeanism, embracing the scepticism of the New Academy movement. Because of his education, Augustine had great rhetorical prowess and was very knowledgeable of the philosophies behind many faiths. At Milan, his mother's religiosity, Augustine's own studies in Neoplatonism , and his friend Simplicianus all urged him towards Christianity. This

1176-415: A greater good. Eventually, Augustine concludes that it was the good of the "companionship" between him and his accomplices that allowed him to delight in this theft. At the age of 17, through the generosity of his fellow citizen Romanianus, Augustine went to Carthage to continue his education in rhetoric , though it was above the financial means of his family. Despite the good warnings of his mother, as

1323-437: A large community of Christians against different political and religious factors which had a major influence on his writings. Possidius admired Augustine as a man of powerful intellect and a stirring orator who took every opportunity to defend Christianity against its detractors. Possidius also described Augustine's personal traits in detail, drawing a portrait of a man who ate sparingly, worked tirelessly, despised gossip, shunned

1470-524: A literal 1,000-year kingdom prior to the general resurrection , but later rejected the belief, viewing it as carnal. During the medieval period, the Catholic Church built its system of eschatology on Augustinian amillennialism , where Christ rules the earth spiritually through his triumphant church. During the Reformation , theologians such as John Calvin accepted amillennialism. Augustine taught that

1617-478: 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

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1764-446: 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

1911-524: 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

2058-466: 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

2205-627: 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

2352-462: 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

2499-566: 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

2646-443: 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,

2793-530: A rhetoric professor. Augustine won the job and headed north to take his position in Milan in late 384. Thirty years old, he had won the most visible academic position in the Latin world at a time when such posts gave ready access to political careers. Although Augustine spent ten years as a Manichaean, he was never an initiate or "elect", but an "auditor", the lowest level in this religion's hierarchy. While still at Carthage

2940-478: 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. Augustine of Hippo Augustine of Hippo ( / ɔː ˈ ɡ ʌ s t ɪ n / aw- GUST -in , US also / ˈ ɔː ɡ ə s t iː n / AW -gə-steen ; Latin : Aurelius Augustinus Hipponensis ; 13 November 354 – 28 August 430), also known as Saint Augustine ,

3087-468: 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

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3234-470: 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

3381-429: A small Numidian city about 31 kilometres (19 miles) south of Thagaste. There he became familiar with Latin literature , as well as pagan beliefs and practices. His first insight into the nature of sin occurred when he and a number of friends stole pears from a neighbourhood garden. He tells this story in his autobiography, Confessions . He realises that the pears were "tempting neither for its colour nor its flavour" - he

3528-563: 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

3675-440: 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

3822-651: 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

3969-443: A teenage heiress. By the time he was able to marry her, however, he had decided to become a Christian priest and the marriage did not happen. Augustine was, from the beginning, a brilliant student, with an eager intellectual curiosity, but he never mastered Greek – his first Greek teacher was a brutal man who constantly beat his students, and Augustine rebelled and refused to study. By the time he realized he needed to know Greek, it

4116-443: A tutorial mode, goals screen and bugfixes. After the release of v1.0 on November 21, 2014, twelve employees were laid off including the programmer and project lead JP LeBreton. On December 16, 2014 Greg Rice posted on the official technical support forums stating that there were no further plans for patches and there was no team assigned to the project. Double Fine officially ended support for Spacebase and ceased development of

4263-520: A villa outside of Milan where he gathered with his followers, and described it as Christianae vitae otium – the leisure of Christian life. In late August of 386, at the age of 31, having heard of Ponticianus's and his friends' first reading of the life of Anthony of the Desert , Augustine converted to Christianity. As Augustine later told it, his conversion was prompted by hearing a child's voice say "take up and read" ( Latin : tolle, lege ). Resorting to

4410-461: 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

4557-546: A young woman in Carthage. Though his mother wanted him to marry a person of his class, the woman remained his lover. He was warned by his mother to avoid fornication (sex outside marriage), but Augustine persisted in the relationship for over fifteen years, and the woman gave birth to his son Adeodatus (372–388), which means "Gift from God", who was viewed as extremely intelligent by his contemporaries. In 385, Augustine ended his relationship with his lover in order to prepare to marry

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4704-421: A youth Augustine lived a hedonistic lifestyle for a time, associating with young men who boasted of their sexual exploits. The need to gain their acceptance encouraged inexperienced boys like Augustine to seek or make up stories about sexual experiences. Despite multiple claims to the contrary, it has been suggested that Augustine's actual sexual experiences were likely with members of the opposite sex only. It

4851-402: 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

4998-585: 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

5145-401: Is a three-dimensional object composed of the four elements, whereas the soul has no spatial dimensions. Soul is a kind of substance, participating in reason, fit for ruling the body. Augustine was not preoccupied, as Plato and Descartes were, in detailed efforts to explain the metaphysics of the soul-body union. It sufficed for him to admit they are metaphysically distinct: to be a human

5292-501: 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

5439-416: 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 )

5586-403: 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

5733-485: 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

5880-509: 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

6027-583: Is known by various cognomens throughout the many denominations of the Christian world, including Blessed Augustine and the Doctor of Grace ( Latin : Doctor gratiae ). Hippo Regius , where Augustine was the bishop , was in modern-day Annaba , Algeria . Augustine was born in 354 in the municipium of Thagaste (now Souk Ahras , Algeria ) in the Roman province of Numidia . His mother, Monica or Monnica,

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6174-439: 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

6321-444: 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

6468-657: 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

6615-768: Is recognized as a saint in the Catholic Church , the Eastern Orthodox Church , the Lutheran churches , and the Anglican Communion . He is also a preeminent Catholic Doctor of the Church and the patron of the Augustinians . His memorial is celebrated on 28 August, the day of his death. Augustine is the patron saint of brewers, printers, theologians, and a number of cities and dioceses. His thoughts profoundly influenced

6762-466: 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

6909-421: 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

7056-423: Is to be a composite of soul and body, with the soul superior to the body. The latter statement is grounded in his hierarchical classification of things into those that merely exist, those that exist and live, and those that exist, live, and have intelligence or reason. Like other Church Fathers such as Athenagoras , Tertullian , Clement of Alexandria and Basil of Caesarea , Augustine "vigorously condemned

7203-447: 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

7350-503: The sortes biblicae , he opened a book of St. Paul's writings (codex apostoli, 8.12.29) at random and read Romans 13: 13–14: "Not in rioting and drunkenness, not in chambering and wantonness, not in strife and envying, but put on the Lord Jesus Christ, and make no provision for the flesh to fulfil the lusts thereof." He later wrote an account of his conversion in his Confessions ( Latin : Confessiones ), which has since become

7497-489: The Edict of Caracalla in 212. Augustine's family had been Roman, from a legal standpoint, for at least a century when he was born. It is assumed that his mother, Monica, was of Berber origin, on the basis of her name, but as his family were honestiores , an upper class of citizens known as honorable men, Augustine's first language was likely Latin. At the age of 11, Augustine was sent to school at Madaurus (now M'Daourouch ),

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7644-528: The Manichaean religion , to which he had formerly adhered. He preached around 6,000 to 10,000 sermons when he was alive; however, there are only around 500 sermons that are accessible today. When Augustine preached his sermons, they were recorded by stenographers. Some of his sermons would last over one hour and he would preach multiple times throughout a given week. When talking to his audience, he would stand on an elevated platform; however, he would walk towards

7791-750: 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

7938-459: 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

8085-460: The true church . He was strongly influenced by the Platonist belief that true reality is invisible and that, if the visible reflects the invisible, it does so only partially and imperfectly (see Theory of Forms ). Others question whether Augustine really held to some form of an "invisible true Church" concept. Augustine originally believed in premillennialism , namely that Christ would establish

8232-485: 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

8379-621: The Augustinian Eremites . In the East , his teachings are more disputed and were notably attacked by John Romanides , but other theologians and figures of the Eastern Orthodox Church have shown significant approbation of his writings, chiefly Georges Florovsky . The most controversial doctrine associated with him, the filioque , was rejected by the Eastern Orthodox Church. Other disputed teachings include his views on original sin,

8526-645: The Augustinians guardians of the tomb of Augustine (called Arca ), which was remade in 1362 and elaborately carved with bas-reliefs of scenes from Augustine's life, created by Giovanni di Balduccio . In October 1695, some workmen in the Church of San Pietro in Ciel d'Oro in Pavia discovered a marble box containing human bones (including part of a skull). A dispute arose between the Augustinian hermits (Order of Saint Augustine) and

8673-510: The Church are the successors of the Apostles , and their authority in the Church is God-given. The concept of Church invisible was advocated by Augustine as part of his refutation of the Donatist sect, though he, as other Church Fathers before him, saw the invisible Church and visible Church as one and the same thing, unlike the later Protestant reformers who did not identify the Catholic Church as

8820-465: The Church in 1298 by Pope Boniface VIII . His feast day is 28 August, the day on which he died. He is considered the patron saint of brewers, printers, theologians, and a number of cities and dioceses. He is invoked against sore eyes. Augustine is remembered in the Church of England 's calendar of saints with a lesser festival on 28 August. According to Bede 's True Martyrology , Augustine's body

8967-473: The Church, who are either dead, sinful members or elect predestined for Heaven). The former is the institutional body established by Christ on earth which proclaims salvation and administers the sacraments, while the latter is the invisible body of the elect, made up of genuine believers from all ages, who are known only to God. The Church, which is visible and societal, will be made up of "wheat" and "tares", that is, good and wicked people (as per Mat. 13:30), until

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9114-500: The Dead, section 5 (420) he exhorted respect for the body on the grounds it belonged to the very nature of the human person . Augustine's favourite figure to describe body-soul unity is marriage: caro tua, coniunx tua – your body is your wife . Initially, the two elements were in perfect harmony. After the fall of humanity they are now experiencing dramatic combat with one another. They are two categorically different things. The body

9261-459: The Holiness of the Catholic Church . That year, also, Adeodatus and Augustine returned home to Africa. Augustine's mother Monica died at Ostia , Italy, as they prepared to embark for Africa. Upon their arrival, they began a life of aristocratic leisure at Augustine's family's property. Soon after, Adeodatus, too, died. Augustine then sold his patrimony and gave the money to the poor. He only kept

9408-550: The Septuagint. His view was based on the Aristotelian distinction "between the fetus before and after its supposed 'vivification ' ". Therefore, he did not classify as murder the abortion of an "unformed" fetus since he thought it could not be known with certainty the fetus had received a soul. Augustine held that "the timing of the infusion of the soul was a mystery known to God alone". However, he considered procreation as "one of

9555-471: 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

9702-475: 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

9849-616: 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

9996-520: The ancient Faith". In his youth he was drawn to the Manichaean faith , and later to the Hellenistic philosophy of Neoplatonism . After his conversion to Christianity and baptism in 386, Augustine developed his own approach to philosophy and theology, accommodating a variety of methods and perspectives. Believing the grace of Christ was indispensable to human freedom, he helped formulate the doctrine of original sin and made significant contributions to

10143-410: 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,

10290-568: 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

10437-442: The audience during his sermons. When he was preaching, he used a variety of rhetorical devices that included analogies , word pictures, similes , metaphors , repetition , and antithesis when trying to explain more about the Bible. In addition, he used questions and rhymes when talking about the differences between people's life on Earth and Heaven as seen in one of his sermons that was preached in 412 AD. Augustine believed that

10584-481: The best and brightest rhetoricians practised, in 383. However, Augustine was disappointed with the apathetic reception. It was the custom for students to pay their fees to the professor on the last day of the term, and many students attended faithfully all term, and then did not pay. Manichaean friends introduced him to the prefect of the City of Rome, Symmachus , who had been asked by the imperial court at Milan to provide

10731-402: 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

10878-439: The consciousness of his African heritage, at least geographically and perhaps ethnically. For example, he refers to Apuleius as "the most notorious of us Africans," to Ponticianus as "a country man of ours, insofar as being African," and to Faustus of Mileve as "an African Gentleman ". Augustine's family name, Aurelius, suggests his father's ancestors were freedmen of the gens Aurelia given full Roman citizenship by

11025-506: The contemporary ideas of ages (such as those of certain Greeks and Egyptians) that differed from the Church's sacred writings. In The Literal Interpretation of Genesis , Augustine argued that God had created everything in the universe simultaneously and not over a period of six days. He argued the six-day structure of creation presented in the Book of Genesis represents a logical framework , rather than

11172-517: 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

11319-533: The creation story was difficult, and remarked that interpretations could change should new information come up. Augustine developed his doctrine of the Church principally in reaction to the Donatist sect. He taught there is one Church, but within this Church there are two realities, namely, the visible aspect (the institutional hierarchy , the Catholic sacraments , and the laity ) and the invisible (the souls of those in

11466-618: The development of just war theory . When the Western Roman Empire began to disintegrate, Augustine imagined the Church as a spiritual City of God , distinct from the material Earthly City. The segment of the Church that adhered to the concept of the Trinity as defined by the Council of Nicaea and the Council of Constantinople closely identified with Augustine's On the Trinity . Augustine

11613-444: 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

11760-681: The doctrine of grace, and predestination . Though considered to be mistaken on some points, he is still considered a saint and has influenced some Eastern Church Fathers, most notably Gregory Palamas . In the Greek and Russian Orthodox churches , his feast day is celebrated on 15 June. The historian Diarmaid MacCulloch has written: "Augustine's impact on Western Christian thought can hardly be overstated; only his beloved example, Paul of Tarsus , has been more influential, and Westerners have generally seen Paul through Augustine's eyes." Augustine of Hippo, also known as Saint Augustine or Saint Austin ,

11907-621: The end of time. This concept countered the Donatist claim that only those in a state of grace were the "true" or "pure" church on earth, and that priests and bishops who were not in a state of grace had no authority or ability to confect the sacraments. Augustine's ecclesiology was more fully developed in City of God . There he conceives of the church as a heavenly city or kingdom, ruled by love, which will ultimately triumph over all earthly empires which are self-indulgent and ruled by pride. Augustine followed Cyprian in teaching that bishops and priests of

12054-413: 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 ,

12201-412: The eternal fate of the soul is determined at death, and that purgatorial fires of the intermediate state purify only those who died in communion with the Church. His teaching provided fuel for later theology. Although Augustine did not develop an independent Mariology , his statements on Mary surpass in number and depth those of other early writers. Even before the Council of Ephesus , he defended

12348-414: The experience eventually produced a decreased sensitivity to pain. Augustine eventually broke off his engagement to his eleven-year-old fiancée but never renewed his relationship with either of his concubines. Alypius of Thagaste steered Augustine away from marriage, saying they could not live a life together in the love of wisdom if he married. Augustine looked back years later on the life at Cassiciacum ,

12495-399: The family house, which he converted into a monastic foundation for himself and a group of friends. Furthermore, while he was known for his major contributions to Christian rhetoric, another major contribution was his preaching style. After converting to Christianity, Augustine turned against his profession as a rhetoric professor in order to devote more time to preaching. In 391 Augustine

12642-403: 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

12789-462: 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

12936-410: 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

13083-548: The game in May 2015. Part of the game's source code was released to the public under the CPAL open-source license , and since then, fans have worked to continue the game's development and support. The game's community has provided bug fixes and extensions to the game based on Double Fine's documented plans, and the first community patch was released in October 2015. The second unofficial patch

13230-417: The game's Lua source code to allow the community to develop new content and features independently. In September 2014, Double Fine announced that they were going to bring Spacebase DF-9 out of early access status, and add features to make the game a full commercial release, due to a lack of sales for the game during the early access period. After the commercial release, Double Fine will release part of

13377-451: 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

13524-405: The goods of marriage; abortion figured as a means, along with drugs which cause sterility, of frustrating this good. It lay along a continuum which included infanticide as an instance of 'lustful cruelty' or 'cruel lust.' Augustine called the use of means to avoid the birth of a child an 'evil work:' a reference to either abortion or contraception or both." In City of God , Augustine rejected both

13671-404: 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

13818-571: 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

13965-499: The library of the church in Hippo and all the books therein should be carefully preserved. He died on 28 August 430. Shortly after his death, the Vandals lifted the siege of Hippo, but they returned soon after and burned the city. They destroyed all but Augustine's cathedral and library, which they left untouched. Augustine was canonized by popular acclaim, and later recognized as a Doctor of

14112-440: 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

14259-564: The medieval worldview. Many Protestants , especially Calvinists and Lutherans , consider him one of the theological fathers of the Protestant Reformation due to his teachings on salvation and divine grace . Protestant Reformers generally, and Martin Luther in particular, held Augustine in preeminence among early Church Fathers . From 1505 to 1521, Luther was a member of the Order of

14406-543: 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

14553-478: 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

14700-566: 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

14847-497: 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

14994-418: 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:

15141-568: 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

15288-468: 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

15435-467: The passage of time in a physical way – it would bear a spiritual, rather than physical, meaning, which is no less literal. One reason for this interpretation is the passage in Sirach  18:1, creavit omnia simul ("He created all things at once"), which Augustine took as proof that the days of Genesis 1 had to be taken non-literalistically. As additional support for describing the six days of creation as

15582-547: 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

15729-515: The practice of induced abortion ", and although he disapproved of abortion during any stage of pregnancy, he made a distinction between early and later abortions. He acknowledged the distinction between "formed" and "unformed" fetuses mentioned in the Septuagint translation of Exodus 21:22–23, which incorrectly translates the word "harm" (from the original Hebrew text) as "form" in the Koine Greek of

15876-443: The preachers' ultimate goal is to ensure the salvation of their audience. In 395, he was made coadjutor Bishop of Hippo and became full Bishop shortly thereafter, hence the name "Augustine of Hippo"; and he gave his property to the church of Thagaste. He remained in that position until his death in 430. Bishops were the only individuals allowed to preach when he was alive and he scheduled time to preach after being ordained despite

16023-511: 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

16170-452: 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

16317-476: 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

16464-438: 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

16611-528: The regular canons ( Canons Regular of Saint Augustine ) as to whether these were the bones of Augustine. The hermits did not believe so; the canons affirmed they were. Eventually Pope Benedict XIII (1724–1730) directed the Bishop of Pavia, Monsignor Pertusati, to make a determination. The bishop declared that, in his opinion, the bones were those of Augustine. The Augustinians were expelled from Pavia in 1785, Augustine's ark and relics were brought to Pavia Cathedral in 1799. San Pietro fell into disrepair but

16758-433: 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

16905-426: 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

17052-405: 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

17199-422: 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

17346-463: The saint. Augustine's large contribution of writings covered diverse fields including theology, philosophy and sociology. Along with John Chrysostom , Augustine was among the most prolific scholars of the early church by quantity. Augustine was one of the first Christian ancient Latin authors with a very clear vision of theological anthropology . He saw the human being as a perfect unity of soul and body. In his late treatise On Care to Be Had for

17493-528: 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

17640-401: The second most votes and was one of five other titles that Double Fine stated they would develop into full games. A full commercial version of the game was announced on October 15, 2013, with an alpha version being available to purchase through Steam Early Access. Double Fine announced on September 17, 2014 that the full game would be released in October 2014. In addition, they promised to release

17787-401: The siege. Augustine has been cited to have excommunicated himself upon the approach of his death in an act of public penance and solidarity with sinners. Spending his final days in prayer and repentance, he requested the penitential Psalms of David be hung on his walls so he could read them and upon which led him to "[weep] freely and constantly" according to Possidius' biography. He directed

17934-564: The source code and no new features will be added, but Double Fine will still be offering support of the game and making bug fix releases. The news was met with controversy, with some fans expressing anger over the fact that the game would not continue development, and some developers questioning whether a failure by a well known developer to successfully use the early access model would tarnish that model for other developers. The release of v1.0 commenced on October 27, 2014, simultaneously with release of Lua source code. The retail version included

18081-399: 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

18228-482: 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

18375-508: 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

18522-539: 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

18669-479: The temptations of the flesh, and exercised prudence in the financial stewardship of his see. Shortly before Augustine's death, the Vandals , a Germanic tribe that had converted to Arianism , invaded Roman Africa . The Vandals besieged Hippo in the spring of 430 when Augustine entered his final illness. According to Possidius, one of the few miracles attributed to Augustine, the healing of an ill man, took place during

18816-631: 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,

18963-603: 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

19110-445: 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

19257-626: Was ordained a priest in Hippo Regius (now Annaba), in Algeria. He was especially interested in discovering how his previous rhetorical training in Italian schools would help the Christian Church achieve its objective of discovering and teaching the different scriptures in the Bible. He became a famous preacher (more than 350 preserved sermons are believed to be authentic), and was noted for combating

19404-487: Was a devout Christian; his father Patricius was a pagan who converted to Christianity on his deathbed. He had a brother named Navigius and a sister whose name is lost but is conventionally remembered as Perpetua . Scholars generally agree that Augustine and his family were Berbers , an ethnic group indigenous to North Africa, but were heavily Romanized, speaking only Latin at home as a matter of pride and dignity. In his writings, Augustine leaves some information as to

19551-675: Was a theologian and philosopher of Berber origin and the bishop of Hippo Regius in Numidia , Roman North Africa . His writings deeply influenced the development of Western philosophy and Western Christianity , and he is viewed as one of the most important Church Fathers of the Latin Church in the Patristic Period . His many important works include The City of God , On Christian Doctrine , and Confessions . According to his contemporary, Jerome of Stridon , Augustine "established anew

19698-472: Was finally restored in the 1870s, under the urging of Agostino Gaetano Riboldi , and reconsecrated in 1896 when the relics of Augustine and the shrine were once again reinstalled. In 1842, a portion of Augustine's right arm (cubitus) was secured from Pavia and returned to Annaba. It now rests in the Saint Augustin Basilica within a glass tube inserted into the arm of a life-size marble statue of

19845-424: Was forever changed. Augustine arrived in Milan and visited Ambrose, having heard of his reputation as an orator. Like Augustine, Ambrose was a master of rhetoric, but older and more experienced. Soon, their relationship grew, as Augustine wrote, "And I began to love him, of course, not at the first as a teacher of the truth, for I had entirely despaired of finding that in thy Church—but as a friendly man." Augustine

19992-417: 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

20139-559: Was later translated or moved to Cagliari , Sardinia , by the Catholic bishops expelled from North Africa by Huneric . Around 720, his remains were transported again by Peter, bishop of Pavia and uncle of the Lombard king Liutprand , to the church of San Pietro in Ciel d'Oro in Pavia, to save them from frequent coastal raids by Saracens . In January 1327, Pope John XXII issued the papal bull Veneranda Santorum Patrum , in which he appointed

20286-407: Was neither hungry nor poor, and he had enough of fruit which were "much better". Over the next few chapters, Augustine agonises over this past sin of his, recognising that one does not desire evil for evil's sake. Rather, "through an inordinate preference for these goods of a lower kind, the better and higher are neglected". In other words, man is drawn to sin when grossly choosing the lesser good over

20433-530: Was racked, and wounded, and bleeding." Augustine confessed he had not been a lover of wedlock so much as a slave of lust, so he procured another concubine since he had to wait two years until his fiancée came of age. However, his emotional wound was not healed. It was during this period that he uttered his famously insincere prayer, "Grant me chastity and continence , but not yet." There is evidence Augustine may have considered this former relationship to be equivalent to marriage. In his Confessions , he admitted

20580-522: Was released in February 2016. Spacebase DF-9 has a 46/100 Metacritic score. IGN gave the game a 6.8/10 score and commented: " Spacebase DF-9 is charming, and its random events give you more to do and worry about than something like Banished . However, it lacks the depth and polish needed to make the tasks of expansion and crisis management go smoothly." Extraterrestrial life Extraterrestrial life , or alien life (colloquially, alien ),

20727-399: 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

20874-521: Was shortly after the Roman emperor Theodosius I declared Christianity to be the only legitimate religion for the Roman Empire on 27 February 380 by the Edict of Thessalonica and then issued a decree of death for all Manichaean monks in 382. Initially, Augustine was not strongly influenced by Christianity and its ideologies, but after coming in contact with Ambrose of Milan, Augustine reevaluated himself and

21021-465: Was too late; and although he acquired a smattering of the language, he was never eloquent with it. He did, however, become a master of Latin. Augustine taught grammar at Thagaste during 373 and 374. The following year he moved to Carthage to conduct a school of rhetoric and remained there for the next nine years. Disturbed by unruly students in Carthage, he moved to establish a school in Rome, where he believed

21168-623: Was very much influenced by Ambrose, even more than by his own mother and others he admired. In his Confessions , Augustine states, "That man of God received me as a father would, and welcomed my coming as a good bishop should." Ambrose adopted Augustine as a spiritual son after the death of Augustine's father. Augustine's mother had followed him to Milan and arranged a respectable marriage for him. Although Augustine acquiesced, he had to dismiss his concubine and grieved for having forsaken his lover. He wrote, "My mistress being torn from my side as an impediment to my marriage, my heart, which clave to her,

21315-418: Was while he was a student in Carthage that he read Cicero 's dialogue Hortensius (now lost), which he described as leaving a lasting impression, enkindling in his heart the love of wisdom and a great thirst for truth. It started his interest in philosophy. Although raised Christian, Augustine became a Manichaean , much to his mother's chagrin. At about the age of 17, Augustine began a relationship with

21462-712: Was without, and I sought thee out there. Unlovely, I rushed heedlessly among the lovely things thou hast made. Thou wast with me, but I was not with thee. These things kept me far from thee; even though they were not at all unless they were in thee. Thou didst call and cry aloud, and didst force open my deafness. Thou didst gleam and shine, and didst chase away my blindness. Thou didst breathe fragrant odours and I drew in my breath; and now I pant for thee. I tasted, and now I hunger and thirst. Thou didst touch me, and I burned for thy peace. Ambrose baptized Augustine and his son Adeodatus, in Milan on Easter Vigil , 24–25 April 387. A year later, in 388, Augustine completed his apology On

21609-557: Was written to console his fellow Christians shortly after the Visigoths had sacked Rome in 410 . Augustine worked tirelessly to convince the people of Hippo to convert to Christianity. Though he had left his monastery, he continued to lead a monastic life in the episcopal residence. Much of Augustine's later life was recorded by his friend Possidius , bishop of Calama (present-day Guelma , Algeria), in his Sancti Augustini Vita . During this latter part of Augustine's life, he helped lead

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