107-633: SELENE ( / ˈ s ɛ l ɪ n iː / ; Selenological and Engineering Explorer ), better known in Japan by its nickname Kaguya ( かぐや ) , was the second Japanese lunar orbiter spacecraft following the Hiten probe. Produced by the Institute of Space and Astronautical Science (ISAS) and the National Space Development Agency (NASDA), the spacecraft was launched on September 14, 2007. After orbiting
214-519: A lunar eclipse , always illuminated by the Sun, but from Earth the visible illumination shifts during its orbit, producing the lunar phases . The Moon is the brightest celestial object in Earth's night sky . This is mainly due to its large angular diameter , while the reflectance of the lunar surface is comparable to that of asphalt . The apparent size is nearly the same as that of the Sun, allowing it to cover
321-538: A ban prohibiting stock trading by employees, numbering around 5,700, who had access to its internal news information management system. The employees were required to pledge in writing that they would not trade in stocks, and were required to gain approval from senior staff to sell shares they already held. NHK banned short-term stock trading completed in periods of six months or less for all other employees. The ban did not extend to employees' families, nor did NHK request any reports on their transactions. On 24 July 2013,
428-425: A decisive role on local surface temperatures . Parts of many craters, particularly the bottoms of many polar craters, are permanently shadowed, these " craters of eternal darkness " have extremely low temperatures. The Lunar Reconnaissance Orbiter measured the lowest summer temperatures in craters at the southern pole at 35 K (−238 °C; −397 °F) and just 26 K (−247 °C; −413 °F) close to
535-434: A few kilometers wide), shallower, and more irregularly shaped than impact craters. They also lack the upturned rims characteristic of impact craters. Several geologic provinces containing shield volcanoes and volcanic domes are found within the near side maria. There are also some regions of pyroclastic deposits , scoria cones and non-basaltic domes made of particularly high viscosity lava. Almost all maria are on
642-503: A global dipolar magnetic field and only has crustal magnetization likely acquired early in its history when a dynamo was still operating. Early in its history, 4 billion years ago, its magnetic field strength was likely close to that of Earth today. This early dynamo field apparently expired by about one billion years ago, after the lunar core had crystallized. Theoretically, some of the remnant magnetization may originate from transient magnetic fields generated during large impacts through
749-718: A hospitable environment for future astronauts, protecting them from extreme temperatures, solar radiation, and micrometeorites. However, challenges include accessibility and risks of avalanches and cave-ins. This discovery offers potential for future lunar bases or emergency shelters. The main features visible from Earth by the naked eye are dark and relatively featureless lunar plains called maria (singular mare ; Latin for "seas", as they were once believed to be filled with water) are vast solidified pools of ancient basaltic lava. Although similar to terrestrial basalts, lunar basalts have more iron and no minerals altered by water. The majority of these lava deposits erupted or flowed into
856-528: A landscape featuring craters of all ages. The Moon was volcanically active until 1.2 billion years ago, which laid down the prominent lunar maria . Most of the mare basalts erupted during the Imbrian period , 3.3–3.7 billion years ago, though some are as young as 1.2 billion years and some as old as 4.2 billion years. There are differing explanations for the eruption of mare basalts, particularly their uneven occurrence which mainly appear on
963-475: A radius of about 500 kilometres (310 mi). This structure is thought to have developed through the fractional crystallization of a global magma ocean shortly after the Moon's formation 4.5 billion years ago. Crystallization of this magma ocean would have created a mafic mantle from the precipitation and sinking of the minerals olivine , clinopyroxene , and orthopyroxene ; after about three-quarters of
1070-718: A reporter at NHK Metropolitan Broadcasting Center died of congestive heart failure . In May 2014, the Shibuya Labor Standards Inspection Office of the Tokyo Labor Bureau certified it as a karōshi (overwork death). Although NHK did not report on this matter, it was announced in October 2017. Ryōichi Ueda, the chairman of NHK, visited the reporter's parents' home and apologized to them. NHK has occasionally faced various criticisms for its treatment of Japan's wartime history. Katsuto Momii ( 籾井 勝人 ) ,
1177-737: A result of tectonic events. NHK The Japan Broadcasting Corporation ( Japanese : 日本放送協会 , Hepburn : Nippon Hōsō Kyōkai ) , also known by its romanized initialism NHK , is a Japanese public broadcaster . It is a statutory corporation funded by viewers' payments of a television license fee . NHK operates two terrestrial television channels ( NHK General TV and NHK Educational TV ), three satellite television channels (NHK BS; as well as two ultra-high-definition television channels, NHK BS Premium 4K and NHK BS8K ), and three radio networks ( NHK Radio 1 , NHK Radio 2 , and NHK FM ). NHK also provides an international broadcasting service, known as NHK World-Japan . NHK World-Japan
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#17328559969851284-460: A result, after a rash of NHK-related scandals including an accounting one , the number of people who had not paid the license fee surpassed one million watchers. This incident sparked debate over the fairness of the fee system. In 2006, the NHK opted to take legal action against those most flagrantly in violation of the law. This fee and how it is charged is unpopular with some citizens. This led to
1391-454: A satellite with similar mass and iron content to the Moon into orbit far outside Earth's Roche limit . Even satellites that initially pass within the Roche limit can reliably and predictably survive, by being partially stripped and then torqued onto wider, stable orbits. On November 1, 2023, scientists reported that, according to computer simulations, remnants of Theia could still be present inside
1498-728: A second way to map the Moon's gravity field. It was especially useful at the lunar limb , where the gravitational acceleration is perpendicular to the line of sight to Earth, making Doppler measurements unsuitable. SELENE carried 13 scientific instruments "to obtain scientific data of the lunar origin and evolution and to develop the technology for the future lunar exploration": Two 2.2 megapixel CCD HDTV cameras , one wide-angle and one telephoto, were also on board, primarily for public outreach. The HDTV system, developed by NHK (Japan Broadcasting Corporation), produced over 1.3 TB of video and stills over 19 months. JAXA collected names and messages that were carried on SELENE through their "Wish Upon
1605-467: A study of Ina , a tiny depression in Lacus Felicitatis , found jagged, relatively dust-free features that, because of the lack of erosion by infalling debris, appeared to be only 2 million years old. Moonquakes and releases of gas indicate continued lunar activity. Evidence of recent lunar volcanism has been identified at 70 irregular mare patches , some less than 50 million years old. This raises
1712-502: A texture resembling snow and a scent resembling spent gunpowder . The regolith of older surfaces is generally thicker than for younger surfaces: it varies in thickness from 10–15 m (33–49 ft) in the highlands and 4–5 m (13–16 ft) in the maria. Beneath the finely comminuted regolith layer is the megaregolith , a layer of highly fractured bedrock many kilometers thick. These extreme conditions are considered to make it unlikely for spacecraft to harbor bacterial spores at
1819-439: A trans-Atlantic flight, 200 times more than on Earth's surface. For further comparison radiation on a flight to Mars is about 1.84 millisieverts per day and on Mars on average 0.64 millisieverts per day, with some locations on Mars possibly having levels as low as 0.342 millisieverts per day. The Moon's axial tilt with respect to the ecliptic is only 1.5427°, much less than the 23.44° of Earth. Because of this small tilt,
1926-454: Is also bilingual and airs on NHK General TV and the international channels and NHK World Premium. World News , a program which airs bulletins from international broadcasters interpreted in Japanese, is aired on NHK BS1 with Catch! Sekai no Top News in the morning and International News Report at night, with the latter also airing on NHK World Premium. News on NHK BS1 is aired at 50 minutes past
2033-489: Is around 3 × 10 atm (0.3 nPa ); it varies with the lunar day. Its sources include outgassing and sputtering , a product of the bombardment of lunar soil by solar wind ions. Elements that have been detected include sodium and potassium , produced by sputtering (also found in the atmospheres of Mercury and Io ); helium-4 and neon from the solar wind; and argon-40 , radon-222 , and polonium-210 , outgassed after their creation by radioactive decay within
2140-521: Is asymmetric, being more dense near the boundary between the Moon's dayside and nightside. Ionizing radiation from cosmic rays , the Sun and the resulting neutron radiation produce radiation levels on average of 1.369 millisieverts per day during lunar daytime , which is about 2.6 times more than on the International Space Station with 0.53 millisieverts per day at about 400 km above Earth in orbit, 5–10 times more than during
2247-660: Is composed of NHK World TV , NHK World Premium , and the shortwave radio service Radio Japan (RJ). World Radio Japan also makes some of its programs available on the Internet. NHK was the first broadcaster in the world to broadcast in high-definition (using multiple sub-Nyquist sampling encoding , also known as Hi-Vision) and in 8K . In regards to NHK's relationship with Johnny & Associates, they have stated that NHK acknowledges that sexual abuse allegations related to Johnny & Associates had repeatedly been reported for many years, but NHK also stated that they lacked awareness of
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#17328559969852354-561: Is estimated from about 500 km (300 miles) to 1,737 km (1,079 miles). While the giant-impact theory explains many lines of evidence, some questions are still unresolved, most of which involve the Moon's composition. Models that have the Moon acquiring a significant amount of the proto-earth are more difficult to reconcile with geochemical data for the isotopes of zirconium, oxygen, silicon, and other elements. A study published in 2022, using high-resolution simulations (up to 10 particles), found that giant impacts can immediately place
2461-455: Is funded by the Japanese government. The annual budget of NHK is subject to review and approval by the Diet of Japan . The Diet also appoints the twelve-member board of governors (経営委員会 keiei iinkai ) that oversees NHK. NHK is managed on a full-time basis by an executive board ( 理事会 , rijikai ) consisting of a president, executive vice president and seven to ten managing directors who oversee
2568-440: Is on average about 1.9 km (1.2 mi) higher than that of the near side. The discovery of fault scarp cliffs suggest that the Moon has shrunk by about 90 metres (300 ft) within the past billion years. Similar shrinkage features exist on Mercury . Mare Frigoris, a basin near the north pole long assumed to be geologically dead, has cracked and shifted. Since the Moon does not have tectonic plates, its tectonic activity
2675-477: Is simply Moon , with a capital M. The noun moon is derived from Old English mōna , which (like all its Germanic cognates) stems from Proto-Germanic *mēnōn , which in turn comes from Proto-Indo-European *mēnsis 'month' (from earlier *mēnōt , genitive *mēneses ) which may be related to the verb 'measure' (of time). Occasionally, the name Luna / ˈ l uː n ə / is used in scientific writing and especially in science fiction to distinguish
2782-571: Is slow and cracks develop as it loses heat. Scientists have confirmed the presence of a cave on the Moon near the Sea of Tranquillity , not far from the 1969 Apollo 11 landing site. The cave, identified as an entry point to a collapsed lava tube, is roughly 45 meters wide and up to 80 m long. This discovery marks the first confirmed entry point to a lunar cave. The analysis was based on photos taken in 2010 by NASA's Lunar Reconnaissance Orbiter . The cave's stable temperature of around 17 °C could provide
2889-507: Is standardized, with discounts for office workers and students who commute, as well a discount for residents of Okinawa prefecture . For viewers making annual payments by credit card with no special discounts, the reception fee is 13,600 yen per year for terrestrial reception only, and 24,090 yen per year for both terrestrial and broadcast satellite reception. However, the Broadcasting Act specifies no punitive actions for nonpayment; as
2996-476: Is the lowest point on the surface of the Moon. The highest elevations of the Moon's surface are located directly to the northeast, which might have been thickened by the oblique formation impact of the South Pole–Aitken basin. Other large impact basins such as Imbrium , Serenitatis , Crisium , Smythii , and Orientale possess regionally low elevations and elevated rims. The far side of the lunar surface
3103-859: The Gyokuon-hōsō , the surrender speech made by Emperor Hirohito , in August 1945. Following the war, in September 1945, the Allied occupation administration under General Douglas MacArthur banned all international broadcasting by NHK, and repurposed several NHK facilities and frequencies for use by the Far East Network (now American Forces Network ). Japanese-American radio broadcaster Frank Shozo Baba joined NHK during this time and led an early post-war revamp of its programming. Radio Japan resumed overseas broadcasts in 1952. A new Broadcasting Act [ ja ]
3210-569: The 1964 Summer Olympics , the first widely televised Olympic Games. The complex was gradually expanded through 1973 when it became the headquarters for NHK. The previous headquarters adjacent to Hibiya Park was redeveloped as the Hibiya City high-rise complex. NHK began experimental satellite broadcasting with the NHK BS ;1 channel in 1984, followed by NHK BS 2 in 1985. Both channels began regular broadcasts in 1989. In April 2011, BS 1
3317-484: The 2011 Tōhoku earthquake and tsunami – Iwate , Miyagi , Fukushima – where it was discontinued on 31 March 2012). From 1963 to 1999, NHK published the journal Studies of broadcasting: an international annual of broadcasting science . NHK is a dependent corporation chartered by the Japanese Broadcasting Act and primarily funded by license fees. NHK World broadcasting (for overseas viewers/listeners)
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3424-508: The 2011 Tōhoku earthquake and tsunami . NHK broadcasts sumo wrestling , baseball games, Olympic Games , soccer games, and a range of other sports. Their broadcast of the last two days of October 1952's autumn sumo tournament became the first ever televised sports broadcast in Japan. The NHK Symphony Orchestra , financially sponsored by NHK, was formerly (until 1951) the Japanese Symphony Orchestra. Its website details
3531-637: The Apollo program ". It followed Japan's first lunar probe, Hagoromo , launched in 1990. China launched its Chang'e 1 lunar explorer on October 24, 2007, followed by India's October 22, 2008 launch of Chandrayaan-1 and the United States Lunar Reconnaissance Orbiter in June 2009. The United States, European countries ( ESA ), Russia, Japan, India and China are planning future crewed lunar exploration missions or lunar outpost construction on
3638-586: The Black Lives Matter movement and George Floyd protests that was criticized for its "crude" animation of protesters and its focus on economic inequality rather than police brutality. An official statement signed by Yuichi Tabata, head of NHK's International News Division, was released through NHK's official website. On 9 January 2022, NHK issued an apology over false allegations made in Director Naomi Kawase 's Tokyo Olympics documentary. Kawase
3745-678: The Imperial Japanese Army nationalised all public news agencies and coordinated their efforts via the Information Liaison Confidential Committee. All published and broadcast news reports became official announcements of the Imperial Army General Headquarters in Tokyo for the duration of World War II . The famous Tokyo Rose wartime programs were broadcast by NHK. NHK also recorded and broadcast
3852-768: The Japan Meteorological Agency makes NHK capable of delivering earthquake early warnings seconds after detection, as well as a more detailed report with Shindo intensity measurements within two-to-three minutes after the quake. They also broadcast air attack warnings in the event of war, using the J-Alert system. All warnings are broadcast in Japanese, with tsunami warnings also delivered in four foreign languages: English, Mandarin Chinese, Korean and Portuguese (Japan has small Chinese , Korean and Brazilian populations). The warnings were broadcast in these languages during
3959-645: The Solar System , it is the largest and most massive satellite in relation to its parent planet , the fifth largest and most massive moon overall, and larger and more massive than all known dwarf planets . Its surface gravity is about one sixth of Earth's, about half of that of Mars , and the second highest among all Solar System moons, after Jupiter 's moon Io . The body of the Moon is differentiated and terrestrial , with no significant hydrosphere , atmosphere , or magnetic field . It formed 4.51 billion years ago, not long after Earth's formation , out of
4066-540: The Taipei Times , stating, "[South] Korea's statements that Japan is the only nation that forced this are puzzling. 'Give us money, compensate us', they say, but since all of this was resolved by the Japan–Korea peace treaty, why are they reviving this issue? It's strange." It was subsequently reported by The Japan Times that on his first day at NHK Momii asked members of the executive team to hand in their resignation on
4173-543: The 21st Director-General of NHK, caused controversy by discussing Japan's actions in World War II at his first press conference after being appointed on 20 December 2013. It was reported that Momii said NHK should support the Japanese government in its territorial dispute with China and South Korea. He also caused controversy by what some describe as the playing down of the comfort women issue in World War II, according to
4280-452: The Earth and the material accreted and formed the Moon just beyond the Earth's Roche limit of ~ 2.56 R 🜨 . Giant impacts are thought to have been common in the early Solar System. Computer simulations of giant impacts have produced results that are consistent with the mass of the lunar core and the angular momentum of the Earth–Moon system. These simulations show that most of
4387-512: The Earth's moon from others, while in poetry "Luna" has been used to denote personification of the Moon. Cynthia / ˈ s ɪ n θ i ə / is another poetic name, though rare, for the Moon personified as a goddess, while Selene / s ə ˈ l iː n iː / (literally 'Moon') is the Greek goddess of the Moon. The English adjective pertaining to the Moon is lunar , derived from the Latin word for
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4494-429: The Earth, due to gravitational anomalies from impact basins. Its shape is more elongated than current tidal forces can account for. This 'fossil bulge' indicates that the Moon solidified when it orbited at half its current distance to the Earth, and that it is now too cold for its shape to restore hydrostatic equilibrium at its current orbital distance. The Moon is by size and mass the fifth largest natural satellite of
4601-463: The Earth-Moon system might be explained by the post-impact mixing of the vaporized material that formed the two, although this is debated. The impact would have released enough energy to liquefy both the ejecta and the Earth's crust, forming a magma ocean. The liquefied ejecta could have then re-accreted into the Earth–Moon system. The newly formed Moon would have had its own magma ocean ; its depth
4708-530: The Earth. The newly formed Moon settled into a much closer Earth orbit than it has today. Each body therefore appeared much larger in the sky of the other, eclipses were more frequent, and tidal effects were stronger. Due to tidal acceleration , the Moon's orbit around Earth has become significantly larger, with a longer period. Following formation, the Moon has cooled and most of its atmosphere has been stripped. The lunar surface has since been shaped by large impact events and many small ones, forming
4815-499: The Moon approximately 10 minutes, taking 5 minutes to rise, and 5 minutes to fall. On average, 120 kilograms of dust are present above the Moon, rising up to 100 kilometers above the surface. Dust counts made by LADEE 's Lunar Dust EXperiment (LDEX) found particle counts peaked during the Geminid , Quadrantid , Northern Taurid , and Omicron Centaurid meteor showers , when the Earth, and Moon pass through comet debris. The lunar dust cloud
4922-401: The Moon between 2018 and 2025. Moon The Moon is Earth 's only natural satellite . It orbits at an average distance of 384,400 km (238,900 mi), about 30 times the diameter of Earth. Tidal forces between Earth and the Moon have synchronized the Moon's orbital period ( lunar month ) with its rotation period ( lunar day ) at 29.5 Earth days, causing the same side of
5029-458: The Moon derived from the impactor, rather than the proto-Earth. However, models from 2007 and later suggest a larger fraction of the Moon derived from the proto-Earth. Other bodies of the inner Solar System such as Mars and Vesta have, according to meteorites from them, very different oxygen and tungsten isotopic compositions compared to Earth. However, Earth and the Moon have nearly identical isotopic compositions. The isotopic equalization of
5136-516: The Moon for a year and eight months, the main orbiter was instructed to impact on the lunar surface near the crater Gill on June 10, 2009. The orbiter's nickname, Kaguya, was selected by the general public. It comes from the name of a lunar princess in the ancient Japanese folktale The Tale of the Bamboo Cutter . After their successful release, its sub-satellites, Rstar and Vstar , were named Okina and Ouna , also derived from characters in
5243-489: The Moon for longer than just one lunar orbit. The topography of the Moon has been measured with laser altimetry and stereo image analysis . Its most extensive topographic feature is the giant far-side South Pole–Aitken basin , some 2,240 km (1,390 mi) in diameter, the largest crater on the Moon and the second-largest confirmed impact crater in the Solar System . At 13 km (8.1 mi) deep, its floor
5350-466: The Moon formed around 50 million years after the origin of the Solar System . Historically, several formation mechanisms have been proposed, but none satisfactorily explains the features of the Earth–Moon system. A fission of the Moon from Earth's crust through centrifugal force would require too great an initial rotation rate of Earth. Gravitational capture of a pre-formed Moon depends on an unfeasibly extended atmosphere of Earth to dissipate
5457-455: The Moon is a crescent\decrescent, [REDACTED] \ [REDACTED] , for example in M ☾ 'lunar mass' (also M L ). The lunar geological periods are named after their characteristic features, from most impact craters outside the dark mare , to the mare and later craters, and finally the young, still bright and therefore readily visible craters with ray systems like Copernicus or Tycho . Isotope dating of lunar samples suggests
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#17328559969855564-510: The Moon to always face Earth. The Moon's gravitational pull—and, to a lesser extent, the Sun 's—are the main drivers of Earth's tides . In geophysical terms , the Moon is a planetary-mass object or satellite planet . Its mass is 1.2% that of the Earth, and its diameter is 3,474 km (2,159 mi), roughly one-quarter of Earth's (about as wide as the United States from coast to coast ). Within
5671-411: The Moon" campaign. 412,627 names and messages were printed on a sheet measuring 280 mm x 160 mm (11 x 6.3 in) at 70 μm (0.0003 in) per character. The sheet was installed under the photovoltaic modules and cooling panels beneath the multi-layered insulation. Major results include: SELENE was part of a renewed global interest in lunar exploration; it was "the largest lunar mission since
5778-554: The Moon's solar illumination varies much less with season than on Earth and it allows for the existence of some peaks of eternal light at the Moon's north pole , at the rim of the crater Peary . The surface is exposed to drastic temperature differences ranging from 120 °C to −171 °C depending on the solar irradiance . Because of the lack of atmosphere, temperatures of different areas vary particularly upon whether they are in sunlight or shadow, making topographical details play
5885-403: The Moon, lūna . Selenian / s ə l iː n i ə n / is an adjective used to describe the Moon as a world, rather than as a celestial object, but its use is rare. It is derived from σελήνη selēnē , the Greek word for the Moon, and its cognate selenic was originally a rare synonym but now nearly always refers to the chemical element selenium . The element name selenium and
5992-460: The Moon. This allowed, for the first time, the direct Doppler shift measurements needed to precisely map the gravitational field of the lunar farside; previously, the farside gravity field could only be inferred by nearside measurements. The relay satellite impacted the lunar farside near the Mineur D crater at 19:46 JST (10:46 UTC) on February 12, 2009. Ouna used Very Long Baseline Interferometry as
6099-479: The NHK brand is common for the whole country. All of them can also be tuned through the Internet, within the national territory. It also has one exclusive satellite channel, as well as two in ultra-high definition. NHK is funded by reception fees ( 受信料 , jushinryō ) , a system analogous to the license fee used in some English-speaking countries. The Broadcasting Act which governs NHK's funding stipulates anyone with equipment able to receive NHK must pay. The fee
6206-484: The Solar System relative to their primary planets. The Moon's diameter is about 3,500 km, more than a quarter of Earth's, with the face of the Moon comparable to the width of either Mainland Australia , Europe or the Contiguous United States (which excludes Alaska , etc.). The whole surface area of the Moon is about 38 million square kilometers, comparable to North and South America combined,
6313-461: The Solar System, categorizable as one of its planetary-mass moons , making it a satellite planet under the geophysical definitions of the term . It is smaller than Mercury and considerably larger than the largest dwarf planet of the Solar System, Pluto . While the minor-planet moon Charon of the Pluto-Charon system is larger relative to Pluto, the Moon is the largest natural satellite of
6420-426: The Sun completely during a total solar eclipse . From Earth about 59% of the lunar surface is visible over time due to cyclical shifts in perspective ( libration ), making parts of the far side of the Moon visible. The Moon has been an important source of inspiration and knowledge for humans, having been crucial to cosmography , mythology, religion , art, time keeping , natural science , and spaceflight . In 1959,
6527-422: The areas of NHK operations. The executive board reports to the board of governors. It maintains three radio stations available nationwide: All of them can also be tuned through the Internet, within the national territory. It manages two open signal channels through digital terrestrial television. Since Japan has a television network system, it schedules territorial disconnections in each of its centers. However,
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#17328559969856634-484: The broadcasting industry" when it comes to using performers who best fit program content and production. The public broadcaster added that it did not fully acknowledge the sexual abuse matter despite various weekly magazine articles about the allegations and a Tokyo High Court ruling in 2004. A few weeks later, NHK announced that it would suspend new contracts with Johnny's performers–including for their annual New Year's Eve television special Kōhaku Uta Gassen –until
6741-413: The combined American landmass having an area (excluding all islands) of 37.7 million square kilometers. The Moon's mass is 1/81 of Earth's, being the second densest among the planetary moons, and having the second highest surface gravity , after Io , at 0.1654 g and an escape velocity of 2.38 km/s ( 8 600 km/h; 5 300 mph) . The Moon is a differentiated body that
6848-479: The company has implemented compensation and recurrence prevention measures. In February 2024, the company announced a strict policy of terminating the appearance of talents formerly affiliated with Johnny & Associates on its programs and not allowing them to appear on new programs after FY2024. In October 2024, NHK Chairman Nobuo Inaba announced at a regular press conference that, he had confirmed efforts of Smile-Up to compensate victims and prevent recurrence and
6955-433: The crust and mantle. The absence of such neutral species (atoms or molecules) as oxygen , nitrogen , carbon , hydrogen and magnesium , which are present in the regolith , is not understood. Water vapor has been detected by Chandrayaan-1 and found to vary with latitude, with a maximum at ~60–70 degrees; it is possibly generated from the sublimation of water ice in the regolith. These gases either return into
7062-480: The debris from a giant impact between Earth and a hypothesized Mars-sized body called Theia . The lunar surface is covered in lunar dust and marked by mountains , impact craters , their ejecta , ray-like streaks , rilles and, mostly on the near side of the Moon, by dark maria ("seas"), which are plains of cooled lava . These maria were formed when molten lava flowed into ancient impact basins. The Moon is, except when passing through Earth's shadow during
7169-447: The dense mare basaltic lava flows that fill those basins. The anomalies greatly influence the orbit of spacecraft about the Moon. There are some puzzles: lava flows by themselves cannot explain all of the gravitational signature, and some mascons exist that are not linked to mare volcanism. The Moon has an external magnetic field of less than 0.2 nanoteslas , or less than one hundred thousandth that of Earth . The Moon does not have
7276-514: The depressions associated with impact basins , though the Moon's largest expanse of basalt flooding, Oceanus Procellarum , does not correspond to an obvious impact basin. Different episodes of lava flows in maria can often be recognized by variations in surface albedo and distinct flow margins. As the maria formed, cooling and contraction of the basaltic lava created wrinkle ridges in some areas. These low, sinuous ridges can extend for hundreds of kilometers and often outline buried structures within
7383-552: The documentary should be removed. Some activists were concerned that the misinformation was spread by NHK to silence those who opposed the Tokyo Olympics during the pandemic. NHK denied that the footage was deliberately fabricated to mislead the public. On 13 January 2022, the NHK Osaka director Terunobu Maeda apologized during a press conference, admitting that the captions "should not have been included". Once again, he denied that
7490-603: The end of April, its members would freeze their licence fee payments for half a year. While Momii did not resign, he was not reappointed and retired after serving only one term of three years. On 17 October 2014, The Times claimed to have received internal NHK documents which banned any reference to the Nanjing Massacre , to Japan's use of wartime sex slaves during World War II, and to its territorial dispute with China in its English-language broadcasting. On 10 June 2020, NHK apologized and took down an 80-second video about
7597-468: The energy of the passing Moon. A co-formation of Earth and the Moon together in the primordial accretion disk does not explain the depletion of metals in the Moon. None of these hypotheses can account for the high angular momentum of the Earth–Moon system. The prevailing theory is that the Earth–Moon system formed after a giant impact of a Mars -sized body (named Theia ) with the proto-Earth . The oblique impact blasted material into orbit about
7704-422: The expansion of plasma clouds. These clouds are generated during large impacts in an ambient magnetic field. This is supported by the location of the largest crustal magnetizations situated near the antipodes of the giant impact basins. The Moon has an atmosphere so tenuous as to be nearly vacuum , with a total mass of less than 10 tonnes (9.8 long tons; 11 short tons). The surface pressure of this small mass
7811-1182: The exposed ones. Conversely, mare lava has obscured many impact melt sheets and pools. Impact melts are formed when intense shock pressures from collisions vaporize and melt zones around the impact site. Where still exposed, impact melt can be distinguished from mare lava by its distribution, albedo, and texture. Sinuous rilles , found in and around maria, are likely extinct lava channels or collapsed lava tubes . They typically originate from volcanic vents , meandering and sometimes branching as they progress. The largest examples, such as Schroter's Valley and Rima Hadley , are significantly longer, wider, and deeper than terrestrial lava channels, sometimes featuring bends and sharp turns that again, are uncommon on Earth. Mare volcanism has altered impact craters in various ways, including filling them to varying degrees, and raising and fracturing their floors from uplift of mare material beneath their interiors. Examples of such craters include Taruntius and Gassendi . Some craters, such as Hyginus , are of wholly volcanic origin, forming as calderas or collapse pits . Such craters are relatively rare, and tend to be smaller (typically
7918-504: The first human-made objects to leave Earth and reach another body arrived at the Moon, with the flyby of the Soviet Union 's Luna 1 and the intentional impact of Luna 2 . In 1966, the Moon became the first extraterrestrial body with a soft landing by Luna 9 and a orbital insertion by Luna 10 were achieved . On July 20, 1969, humans for the first time landed on the Moon and any extraterrestrial body, at Mare Tranquillitatis with
8025-427: The flood lavas that erupted onto the surface from partial melting in the mantle confirm the mafic mantle composition, which is more iron-rich than that of Earth. The crust is on average about 50 kilometres (31 mi) thick. The Moon is the second-densest satellite in the Solar System, after Io . However, the inner core of the Moon is small, with a radius of about 350 kilometres (220 mi) or less, around 20% of
8132-569: The formation of the NHK Party ( NHK党 , NHK tō ) , also known as N-Koku ( N国 ) , a single-issue political party , which has protested this fee with representatives in the upper house . NHK broadcasts a variety of programming. NHK offers local, national, and world news reports. NHK News 7 airs daily and is broadcast bilingually with both Japanese and English audio tracks on NHK General TV and NHK's international channels TV Japan and NHK World Premium . The flagship news program News Watch 9
8239-512: The grounds they had all been appointed by his predecessor. A number of civil society groups protested against Momii's continued tenure as Director-General of NHK. On 27 January 2014, the Viewers' Community to Observe and Encourage NHK ( NHKを監視・激励する視聴者コミュニティ ) issued a public letter calling for Momii's resignation on the grounds that the remarks he made at his inaugural press conference were explosive. The letter stated that if Momii did not resign by
8346-506: The hour except during live sports events. NHK also offers news for the deaf (which airs on NHK Educational TV), regional news (which airs on NHK General TV) and children's news. Newsline is an English-language newscast designed for foreign viewers and airs on NHK World . In his book Broadcasting Politics in Japan: NHK and Television News , Ellis S. Krauss states: 'In the 1960s and 1970s, external critics of NHK news were complaining about
8453-433: The incident was a fabrication. In December 2023, Japan's Broadcasting Ethics and Program Improvement Organization (BPO) concluded that NHK had breached broadcasting ethics in its "News Watch 9" program, where people believed to have died from COVID-19 vaccine injury were treated as if they had died from COVID-19. Regarding the incident as an inappropriate way of reporting, NHK stated that it would take measures to avoid
8560-399: The issue at that time and chose not to follow up or cover the issue entirely. In addition, they stated that they failed in their role as a news media organization, and simply sat idle as many minors became sexual abuse victims. On 8 September, 2023, NHK , said in a statement that they took the matter seriously, and that they would "work harder to ensure that human rights are more respected in
8667-419: The lander Eagle of the United States ' Apollo 11 mission. Five more crews were sent between then and 1972, each with two men landing on the surface. The longest stay was 75 hours by the Apollo 17 crew. Since then, exploration of the Moon has continued robotically, and crewed missions are being planned to return beginning in the late 2020s. The usual English proper name for Earth's natural satellite
8774-601: The leadership of Count Gotō Shinpei . Tokyo Broadcasting Station, along with separate organizations in Osaka and Nagoya , began radio broadcasts in 1925. The three stations merged under the first incarnation of NHK in August 1926. NHK was modelled on the BBC of the United Kingdom , and the merger and reorganisation was carried out under the auspices of the pre-war Ministry of Communications . NHK's second radio network began in 1931, and
8881-421: The magma ocean had crystallized, lower-density plagioclase minerals could form and float into a crust atop. The final liquids to crystallize would have been initially sandwiched between the crust and mantle, with a high abundance of incompatible and heat-producing elements. Consistent with this perspective, geochemical mapping made from orbit suggests a crust of mostly anorthosite . The Moon rock samples of
8988-516: The mantle could be responsible for prolonged activities on the far side in the Orientale basin. The lighter-colored regions of the Moon are called terrae , or more commonly highlands , because they are higher than most maria. They have been radiometrically dated to having formed 4.4 billion years ago, and may represent plagioclase cumulates of the lunar magma ocean. In contrast to Earth, no major lunar mountains are believed to have formed as
9095-406: The mare. Another result of maria formation is the creation of concentric depressions along the edges, known as arcuate rilles . These features occur as the mare basalts sink inward under their own weight, causing the edges to fracture and separate. In addition to the visible maria, the Moon has mare deposits covered by ejecta from impacts. Called cryptomares, these hidden mares are likely older than
9202-524: The near side of the Moon, and cover 31% of the surface of the near side compared with 2% of the far side. This is likely due to a concentration of heat-producing elements under the crust on the near side, which would have caused the underlying mantle to heat up, partially melt, rise to the surface and erupt. Most of the Moon's mare basalts erupted during the Imbrian period , 3.3–3.7 billion years ago, though some being as young as 1.2 billion years and as old as 4.2 billion years. In 2006,
9309-440: The near-side. Causes of the distribution of the lunar highlands on the far side are also not well understood. Topological measurements show the near side crust is thinner than the far side. One possible scenario then is that large impacts on the near side may have made it easier for lava to flow onto the surface. The Moon is a very slightly scalene ellipsoid due to tidal stretching, with its long axis displaced 30° from facing
9416-399: The orbit was lowered to 50 kilometres (31 mi) ± 20 kilometres (12 mi), and impact with lunar surface occurred at 18:25 UTC on June 10, 2009. The mission featured three separate spacecraft: Okina (formerly Rstar) and Ouna (formerly Vstar) were octagonal prisms to support radio science. Okina relayed radio communications between the orbiter and the Earth when the orbiter was behind
9523-1121: The orchestra's history and ongoing concert programme. Since 1953, NHK has broadcast the Kōhaku Uta Gassen song contest on New Year's Eve, ending shortly before midnight in PIX System . A sentimental morning show , a weekly jidaigeki and a year-long show, the Taiga drama , spearhead the network's fiction offerings. NHK is also making efforts at broadcasting dramas made in foreign countries as overseas drama ( 海外ドラマ , Kaigai Dorama ) . The longest running children's show in Japan, Okaasan to Issho ( おかあさんといっしょ , With Mother ) , started broadcasting in 1959 and still airs to this day Monday to Friday at 17:36–18:00 JST , Sunday at 17:30–17:54 JST, with rebroadcasts Tuesday to Sunday at 5:00–5:24 JST on NHK World Premium. In 2007, three employees of NHK were fined and fired for insider trading . They had profited by trading shares based on exclusive NHK knowledge. On 11 July 2008, NHK introduced
9630-403: The planned operation by the end of October 2008 and began extended operations planned to continue through March 2009. It would then be sent into a circular 50-kilometre (31 mi) orbit, and finally to an elliptical 20-to-100-kilometre (12 to 62 mi) one, with a controlled impact occurring by August 2009. Because of a degraded reaction wheel , the plan was changed so that on February 1, 2009,
9737-432: The possibility of a much warmer lunar mantle than previously believed, at least on the near side where the deep crust is substantially warmer because of the greater concentration of radioactive elements. Evidence has been found for 2–10 million years old basaltic volcanism within the crater Lowell, inside the Orientale basin. Some combination of an initially hotter mantle and local enrichment of heat-producing elements in
9844-583: The prefix seleno- (as in selenography , the study of the physical features of the Moon) come from this Greek word. Artemis , the Greek goddess of the wilderness and the hunt, came to also be identified as the goddess of the Moon ( Selene ) and was sometimes called Cynthia , after her birthplace on Mount Cynthus . Her Roman equivalent is Diana . The names Luna, Cynthia, and Selene are reflected in technical terms for lunar orbits such as apolune , pericynthion and selenocentric . The astronomical symbol for
9951-436: The radius of the Moon. Its composition is not well understood, but is probably metallic iron alloyed with a small amount of sulfur and nickel; analyzes of the Moon's time-variable rotation suggest that it is at least partly molten. The pressure at the lunar core is estimated to be 5 GPa (49,000 atm). On average the Moon's surface gravity is 1.62 m/s ( 0.1654 g ; 5.318 ft/s ), about half of
10058-471: The regolith because of the Moon's gravity or are lost to space, either through solar radiation pressure or, if they are ionized, by being swept away by the solar wind's magnetic field. Studies of Moon magma samples retrieved by the Apollo missions demonstrate that the Moon had once possessed a relatively thick atmosphere for a period of 70 million years between 3 and 4 billion years ago. This atmosphere, sourced from gases ejected from lunar volcanic eruptions,
10165-471: The separation of management from Starto Entertainment is steadily progressing, and that requests to perform–including Kōhaku Uta Gassen for current Starto celebrities would resume. Commercial broadcasters had already announced on the resumption of new appointments to celebrities belonging to Starto. NHK's earliest forerunner was the Tokyo Broadcasting Station ( 東京放送局 ) , founded in 1924 under
10272-643: The strict neutrality, the lack of criticism of the government, and the 'self-regulation in covering events'. Krauss claims that little had changed by the 1980s and 1990s. After the Fukushima nuclear disaster in 2011, NHK was criticised for underplaying the dangers from radioactive contamination . Under the Broadcasting Act, NHK is under the obligation to broadcast early warning emergency reporting in times of natural disasters such as earthquakes and tsunamis . Their national network of seismometers in cooperation with
10379-455: The surface gravity of Mars and about a sixth of Earth's. The Moon's gravitational field is not uniform. The details of the gravitational field have been measured through tracking the Doppler shift of radio signals emitted by orbiting spacecraft. The main lunar gravity features are mascons , large positive gravitational anomalies associated with some of the giant impact basins, partly caused by
10486-412: The tale. The main scientific objectives of the mission were to: SELENE launched on September 14, 2007, at 01:31:01 UTC on an H-IIA (Model H2A2022) carrier rocket from Tanegashima Space Center into a 281.55-kilometre (174.95 mi) ( perigee ) / 232,960-kilometre (144,750 mi) ( apogee ) geocentric parking orbit . The total launch mass was 3,020 kilograms (6,660 lb). The SELENE mission
10593-507: The third radio network (FM) began in 1937. NHK began shortwave broadcasting on an experimental basis in the 1930s, and began regular English- and Japanese-language shortwave broadcasts in 1935 under the name Radio Japan , initially aimed at ethnic Japanese listeners in Hawaii and the west coast of North America . By the late 1930s, NHK's overseas broadcasts were known as Radio Tokyo , which became an official name in 1941. In November 1941,
10700-446: The winter solstice in the north polar crater Hermite . This is the coldest temperature in the Solar System ever measured by a spacecraft, colder even than the surface of Pluto . Blanketed on top of the Moon's crust is a highly comminuted (broken into ever smaller particles) and impact gardened mostly gray surface layer called regolith , formed by impact processes. The finer regolith, the lunar soil of silicon dioxide glass, has
10807-496: Was enacted in 1950, which made NHK a listener-supported independent corporation and simultaneously opened the market for commercial broadcasting in Japan. NHK started television broadcasting in 1953, followed by its educational TV channel in 1959 and color television broadcasts in 1960. NHK opened the first stage of its current headquarters in Japan's capital city 's special ward Shibuya as an international broadcasting center for
10914-424: Was initially in hydrostatic equilibrium but has since departed from this condition. It has a geochemically distinct crust , mantle , and core . The Moon has a solid iron-rich inner core with a radius possibly as small as 240 kilometres (150 mi) and a fluid outer core primarily made of liquid iron with a radius of roughly 300 kilometres (190 mi). Around the core is a partially molten boundary layer with
11021-407: Was originally scheduled to launch in 2003, but rocket failures on another mission and technical difficulties delayed the launch until 2007. Launch was planned for August 16, 2007, but was postponed when some electronic components were found to be installed incorrectly. On October 3, it entered an initial 101-to-11,741-kilometre (63 to 7,296 mi) polar lunar orbit. On October 9, the relay satellite
11128-917: Was rebranded while BS 2 channel ceased broadcasting and was replaced by "BS Premium" which broadcasts on the channel formerly used by BShi. International satellite broadcasts to North America and Europe began in 1995, which led to the launch of NHK World in 1998. It became free-to-air over the Astra 19.2°E ( Astra 1L ) and Eurobird satellites in Europe in 2008. NHK began digital television broadcasting in December 2000 through BS Digital, followed by terrestrial digital TV broadcasts in three major metropolitan areas in 2003. NHK's digital television coverage gradually expanded to cover almost all of Japan by 24 July 2011, when analog transmissions were discontinued & ended (except in three prefectures that were heavily affected by
11235-662: Was released into a 100-to-2,400-kilometre (62 to 1,491 mi) orbit, while on October 12 the VLBI satellite was released into a 100-to-800-kilometre (62 to 497 mi) one. Finally, by October 19, the orbiter was in a circular 100-kilometre (62 mi) orbit. The nominal mission duration was one year plus possible extensions. On October 31, 2007, Kaguya deployed its Lunar Magnetometer, Lunar Radar Sounder, Earth-looking Upper Atmosphere and Plasma Imager. On December 21, 2007, Kaguya began regular operations after all fifteen observation experiments had been satisfactorily verified. Kaguya completed
11342-574: Was selected by the IOC in 2018 to cover Japanese reactions to the event and later during the COVID-19 pandemic . Footage and captions in the documentary alleged that protesters were being paid money to attend anti-Olympics rallies. One of the men interviewed later stated he was "unsure" if he had actually attended any anti-Olympics rallies. NHK Osaka cited "editorial oversights" and "deficiencies in research", issuing an apology. Some anti-Olympic activists demanded that
11449-401: Was twice the thickness of that of present-day Mars . The ancient lunar atmosphere was eventually stripped away by solar winds and dissipated into space. A permanent Moon dust cloud exists around the Moon, generated by small particles from comets. Estimates are 5 tons of comet particles strike the Moon's surface every 24 hours, resulting in the ejection of dust particles. The dust stays above
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