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Vālmiki (crater)
Vālmiki is a crater on Mercury. Its name was adopted by the International Astronomical Union (IAU) in 1976. It is named for the Indian poet Valmiki. Vālmiki is one of 110 peak ring basins on Mercury.Chapman, C. R., Baker, D. M. H., Barnouin, O. S., Fassett, C. I., Marchie, S., Merline, W. J., Ostrach, L. R., Prockter, L. M., and Strom, R. G., 2018. Impact Cratering of Mercury. In ''Mercury: The View After MESSENGER'' edited by Sean C. Solomon, Larry R. Nittler, and Brian J. Anderson. Cambridge Planetary Science. Chapter 9. Vālmiki is located between the ancient, large craters Tolstoj (to the west) and Beethoven (to the east). To the southwest is Gogol, and to the southeast is Bartók. Vālmiki crater EW1007212291G.jpg, Vālmiki at center with Beethoven Ludwig van Beethoven (baptised 17 December 177026 March 1827) was a German composer and pianist. He is one of the most revered figures in the history of Western music; his works rank among the most performed o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MESSENGER
Messenger, Messengers, The Messenger or The Messengers may refer to: People * Courier, a person or company that delivers messages, packages, or mail * Messenger (surname) * Bicycle messenger, a bicyclist who transports packages through cities * Messenger-at-arms, an officer of the Scottish Court of Session * Messenger of the Court, a court officer responsible for carrying communications and executing other orders * Prophets and messengers in Islam * Muhammad and other prophets in Islam, who were known as Messengers of Allah (God) Science and technology Biology and chemistry * Chemical messenger, such as a hormone or neurotransmitter, a molecule used for cellular signalling * Messenger RNA (mRNA), RNA that carries information from DNA to the ribosome sites of protein synthesis in a cell Electronics and computing *Instant messenger, a tool for online text communication **Facebook Messenger, an instant messaging service by Meta (Facebook) **Microsoft Messenger service, an instant me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valmiki
Valmiki (; , ) was a legendary poet who is celebrated as the traditional author of the epic ''Ramayana'', based on the attribution in the text itself. He is revered as ''Ādi Kavi'', the first poet, author of ''Ramayana'', the first epic poem. The ''Ramayana'', originally written by Valmiki, consists of 24,000 shlokas and seven cantos (kaṇḍas). The is composed of about 480,002 words, being a quarter of the length of the full text of the ''Mahabharata'' or about four times the length of the ''Iliad''. The ''Ramayana'' tells the story of a prince, Rama of the city of Ayodhya (Ramayana), Ayodhya in the Kosala, Kingdom of Kosala, whose wife Sita is abducted by Ravana, the demon-king (Rakshasa) of Lanka. The scholars' estimates for the earliest stage of the text ranging from the 8th to 4th centuries BCE, and later stages extending up to the 3rd century CE, although original date of composition is unknown. As with many traditional epics, it has gone through a process of interp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury (planet)
Mercury is the first planet from the Sun. It is a rocky planet with a trace atmosphere. While it is the List of Solar System objects by size, smallest and least massive planet of the Solar System, its surface gravity is slightly higher than that of Mars. The surface of Mercury is similar to Earth's Moon, heavily Impact crater, cratered, with expansive rupes system, generated from thrust faults, and bright ray systems, formed by ejecta. Its largest crater, Caloris Planitia, has a diameter of , which is about one-third the diameter of the planet (). Being the most inferior planet, inferior orbiting planet it appears in Earth's sky, always close to the Sun, either as a "morning star" or an "evening star". It stays most of the time the closest to all other planets and is the planet with the highest delta-v needed to travel to from all other planets of the Solar System. Mercury's sidereal year (88.0 Earth days) and sidereal day (58.65 Earth days) are in a 3:2 ratio. This relation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Astronomical Union
The International Astronomical Union (IAU; , UAI) is an international non-governmental organization (INGO) with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreach, education, and development through global cooperation. It was founded on 28 July 1919 in Brussels, Belgium and is based in Paris, France. The IAU is composed of individual members, who include both professional astronomers and junior scientists, and national members, such as professional associations, national societies, or academic institutions. Individual members are organised into divisions, committees, and working groups centered on particular subdisciplines, subjects, or initiatives. the Union had 85 national members and 12,734 individual members, spanning 90 countries and territories. Among the key activities of the IAU is serving as a forum for scientific conferences. It sponsors nine annual symposia and holds a triannual General Assembly that sets policy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NASA
The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States's civil list of government space agencies, space program, aeronautics research and outer space, space research. National Aeronautics and Space Act, Established in 1958, it succeeded the National Advisory Committee for Aeronautics (NACA) to give the American space development effort a distinct civilian orientation, emphasizing peaceful applications in space science. It has since led most of America's space exploration programs, including Project Mercury, Project Gemini, the 1968–1972 Apollo program missions, the Skylab space station, and the Space Shuttle. Currently, NASA supports the International Space Station (ISS) along with the Commercial Crew Program and oversees the development of the Orion (spacecraft), Orion spacecraft and the Sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peak Ring
A peak ring crater is a type of complex crater, which is different from a multi-ringed basin or central-peak crater. A central peak is not seen; instead, a roughly circular ring or plateau, possibly discontinuous, surrounds the Impact crater, crater's center, with the crater rim still farther out from the center. Formation The rings form by different processes, and inner rings may not be formed by the same processes as outer rings.Geology Pagewww.geologypage.com/2016/10/research-helps-explain-formation-ringed-crater-moon.html accessdate: February 5, 2017 It has long been the view that peak rings are formed in the stage subsequent to central peak formation in craters, with the stage being dependent on the crater diameter and planetary gravity. The central peaks of craters are believed to originate from hydrodynamic flow of material lifted by inward-collapsing crater walls, while impact-shattered rock debris is briefly turned to fluid by strong vibrations that develop during crater ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tolstoj (crater)
Tolstoj is a large, ancient impact crater on Mercury. It was named after Leo Tolstoy by the IAU in 1976. The albedo feature Solitudo Maiae appears to be associated with this crater. The impact that produced the Tolstoj Basin occurred very early in the history of Mercury. Two ragged, discontinuous rings approximately 356 km and 510 km in diameter encompass the structure but are poorly developed on its north and northeast sides; a third partial ring with a diameter of 466 km occurs on its southeast side. Diffuse patches of material of dark albedo lie outside the innermost ring. The central part of the basin is covered by a high reflectance smooth plains (HRP) material. The bright interior of the basin is noticeably redder than the surrounding plains, which are made of a bluer low reflectance material (LRM). The dark annulus of ejecta around Tolstoj is called the Goya Formation, defined by lineated and hummocky topography. The ejecta has one of darkest surfaces on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beethoven (crater)
Beethoven is a crater at latitude 20°S, longitude 124°W on Mercury. It is 630 km in diameter and was named after Ludwig van Beethoven. It is the eleventh largest named impact crater in the Solar System and the third largest on Mercury (after Caloris and Rembrandt). Unlike many basins of similar size on the Moon, such as the Orientale Basin, Beethoven is not multi-ringed. Remnant ejecta blankets around parts of the Beethoven are subdued in appearance and their margins poorly defined in places. The crater wall (rim) of Beethoven is buried by its ejecta blanket and by plains materials and is barely visible. The floor of the basin is covered with intermediate smooth plains material, which has the same reflectance as the exterior intermediate terrain. However, there are no wrinkle ridges or graben inside the basin like those in Caloris. Spudis and Prosser have suggested that Beethoven may possibly be late c3 in age or as old as early c2, which means that it is older than t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gogol (crater)
Gogol is a crater on Mercury (planet), Mercury. Its name was adopted by the International Astronomical Union (IAU) in 1985. Gogol is named for the Russian playwright Nikolai Gogol, who lived from 1809 to 1852. The crater was first imaged by Mariner 10 in 1974. The large crater Vālmiki (crater), Vālmiki is to the northeast of Gogol. Bartók (crater), Bartók is to the east. References Impact craters on Mercury {{Mercury-planet-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bartók (crater)
Bartók is a crater on Mercury. Its name was adopted by the International Astronomical Union (IAU) in 1979. Bartók is named for the Hungarian composer Béla Bartók, who lived from 1881 to 1945. The crater was first imaged by Mariner 10 in 1974. Bartók is the largest crater of the Kuiperian system on Mercury, at 118 km diameter. It is followed by Amaral crater. Within the central peak complex of Bartók is a ''dark spot'' of low reflectance material (LRM).Zhiyong Xiao, Robert G. Strom, David T. Blewett, Paul K. Byrne, Sean C. Solomon, Scott L. Murchie, Ann L. Sprague, Deborah L. Domingue, Jörn Helbert, 2013. ''Dark spots on Mercury: A distinctive low-reflectance material and its relation to hollows''. Journal of Geophysical Research Planets.doi.org/10.1002/jgre.20115/ref> Dark spots are associated with hollows. To the northeast of Bartók is the large basin Beethoven. The crater Vālmiki is to the northwest of Bartók, and Gogol Nikolai Vasilyevich Go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bashō (crater)
Bashō is a crater on Mercury named after Matsuo Bashō, a 17th-century Japanese writer. Bashō crater is only in diameter, but is a prominent feature on Mercury's surface, due to its bright rays. Photographs from NASA's ''Mariner 10'' and ''MESSENGER'' spacecraft show a curious halo of dark material around the crater. The dark material is typically referred to as low-reflectance material (LRM) and there is evidence that it is caused by graphite. Bashō is one of the largest craters of the Kuiperian system on Mercury. The largest is Bartók crater.Denevi, B. W., Ernst, C. M., Prockter, L. M., and Robinson, M. S., 2018. The Geologic History of Mercury. In ''Mercury: The View After MESSENGER'' edited by Sean C. Solomon, Larry R. Nittler, and Brian J. Anderson. Cambridge Planetary Science. Chapter 6, Table 6.4. Basho crater 0167015.jpg, Mariner 10 ''Mariner 10'' was an American Robotic spacecraft, robotic space probe launched by NASA on 3 November 1973, to fly by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
