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Akutagawa (crater)
Akutagawa is a crater on Mercury. It has a diameter of 106 kilometers. Its name was adopted by the International Astronomical Union (IAU) in on September 25, 2015. Akutagawa is named for the Japanese writer Ryūnosuke Akutagawa. Much of Akutagawa is surrounded by low-reflectance material (LRM), thought to be caused by the carbon mineral graphite Graphite () is a crystalline form of the element carbon. It consists of stacked layers of graphene. Graphite occurs naturally and is the most stable form of carbon under standard conditions. Synthetic and natural graphite are consumed on large .... References Impact craters on Mercury {{Mercury-planet-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MESSENGER
''MESSENGER'' was a NASA robotic space probe that orbited the planet Mercury between 2011 and 2015, studying Mercury's chemical composition, geology, and magnetic field. The name is a backronym for "Mercury Surface, Space Environment, Geochemistry, and Ranging", and a reference to the messenger god Mercury from Roman mythology. ''MESSENGER'' was launched aboard a Delta II rocket in August 2004. Its path involved a complex series of flybys – the spacecraft flew by Earth once, Venus twice, and Mercury itself three times, allowing it to decelerate relative to Mercury using minimal fuel. During its first flyby of Mercury in January 2008, ''MESSENGER'' became the second mission, after Mariner 10 in 1975, to reach Mercury. ''MESSENGER'' entered orbit around Mercury on March 18, 2011, becoming the first spacecraft to do so. It successfully completed its primary mission in 2012. Following two mission extensions, the spacecraft used the last of its maneuvering propellant to deo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ryūnosuke Akutagawa
, art name , was a Japanese writer active in the Taishō period in Japan. He is regarded as the "father of the Japanese short story", and Japan's premier literary award, the Akutagawa Prize, is named after him. He committed suicide at the age of 35 through an overdose of barbital. Early life Ryūnosuke Akutagawa was born in Irifune, Kyōbashi, Tokyo City (present-day Akashi, Chūō, Tokyo), the eldest son of businessman Toshizō Niihara and his wife Fuku. His family owned a milk production business. His mother experienced a mental illness shortly after his birth, so he was adopted and raised by his maternal uncle, Dōshō Akutagawa, from whom he received the Akutagawa family name. He was interested in classical Chinese literature from an early age, as well as in the works of Mori Ōgai and Natsume Sōseki. He entered the First High School in 1910, developing relationships with classmates such as Kan Kikuchi, Kume Masao, Yūzō Yamamoto, and , all of whom would later become ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Akutagawa Crater MESSENGER WAC IGF To RGB
Akutagawa (written: 芥川) is a Japanese surname. Notable people with the surname include: * Ryūnosuke Akutagawa (1892–1927), Japanese poet and writer * Yasushi Akutagawa (1925–1989), Japanese composer and conductor, son of Akutagawa Ryunosuke * David Akutagawa, 20th-century martial artist See also *Madokoro Akutagawa Saori *Akutagawa Prize, a literary award *Akutagawa (crater) Akutagawa is a crater on Mercury. It has a diameter of 106 kilometers. Its name was adopted by the International Astronomical Union (IAU) in on September 25, 2015. Akutagawa is named for the Japanese writer Ryūnosuke Akutagawa. Much of Akutag ... {{surname, Akutagawa Japanese-language surnames ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mercury (planet)
Mercury is the smallest planet in the Solar System and the closest to the Sun. Its orbit around the Sun takes 87.97 Earth days, the shortest of all the Sun's planets. It is named after the Roman god ' ( Mercury), god of commerce, messenger of the gods, and mediator between gods and mortals, corresponding to the Greek god Hermes (). Like Venus, Mercury orbits the Sun within Earth's orbit as an inferior planet, and its apparent distance from the Sun as viewed from Earth never exceeds 28°. This proximity to the Sun means the planet can only be seen near the western horizon after sunset or the eastern horizon before sunrise, usually in twilight. At this time, it may appear as a bright star-like object, but is more difficult to observe than Venus. From Earth, the planet telescopically displays the complete range of phases, similar to Venus and the Moon, which recurs over its synodic period of approximately 116 days. The synodic proximity of Mercury to Earth makes Mercury most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Astronomical Union
The International Astronomical Union (IAU; french: link=yes, Union astronomique internationale, UAI) is a nongovernmental organisation with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreach, education, and development through global cooperation. It was founded in 1919 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. As of 2018, the Union had over 13,700 individual members, spanning 90 countries, and 82 national members. 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 agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeeding the National Advisory Committee for Aeronautics (NACA), to give the U.S. space development effort a distinctly civilian orientation, emphasizing peaceful applications in space science. NASA has since led most American space exploration, including Project Mercury, Project Gemini, the 1968-1972 Apollo Moon landing missions, the Skylab space station, and the Space Shuttle. NASA supports the International Space Station and oversees the development of the Orion spacecraft and the Space Launch System for the crewed lunar Artemis program, Commercial Crew spacecraft, and the planned Lunar Gateway space station. The agency is also responsible for the Launch Services Program, which provides oversight of launch operations and countdown management f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graphite
Graphite () is a crystalline form of the element carbon. It consists of stacked layers of graphene. Graphite occurs naturally and is the most stable form of carbon under standard conditions. Synthetic and natural graphite are consumed on large scale (300 kton/year, in 1989) for uses in pencils, lubricants, and electrodes. Under high pressures and temperatures it converts to diamond. It is a weak conductor of heat and electricity. Types and varieties Natural graphite The principal types of natural graphite, each occurring in different types of ore deposits, are * Crystalline small flakes of graphite (or flake graphite) occurs as isolated, flat, plate-like particles with hexagonal edges if unbroken. When broken the edges can be irregular or angular; * Amorphous graphite: very fine flake graphite is sometimes called amorphous; * Lump graphite (or vein graphite) occurs in fissure veins or fractures and appears as massive platy intergrowths of fibrous or acicular crystalline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Akutagawa Crater EW0242839841G
Akutagawa (written: 芥川) is a Japanese surname. Notable people with the surname include: * Ryūnosuke Akutagawa (1892–1927), Japanese poet and writer * Yasushi Akutagawa (1925–1989), Japanese composer and conductor, son of Akutagawa Ryunosuke * David Akutagawa, 20th-century martial artist See also *Madokoro Akutagawa Saori *Akutagawa Prize, a literary award *Akutagawa (crater) Akutagawa is a crater on Mercury. It has a diameter of 106 kilometers. Its name was adopted by the International Astronomical Union (IAU) in on September 25, 2015. Akutagawa is named for the Japanese writer Ryūnosuke Akutagawa. Much of Akutag ... {{surname, Akutagawa Japanese-language surnames ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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