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Montes Rook
Montes Rook is a ring-shaped mountain range that lies along the western limb of the Moon, crossing over to the far side. It completely encircles the Mare Orientale, and forms part of a massive impact basin feature. This range in turn is encircled by the larger Montes Cordillera, which is separated from the Montes Rook by a rugged, ring-shaped plain. The Montes Rook is actually a double-ring formation, sometimes divided into the outer Rook and the inner Rook, having respective diameters of 620 km and 480 km. The material excavated to form Montes Rook came from a mafic layer below an anorthositic zone. Many of the peaks in this ring are composed of pure anorthosite. Sections of the gap between these sub-ranges contain long valleys filled in places with basaltic lava, forming small lunar maria. One such section along the northeastern part of the range has been named Lacus Veris. The selenographic coordinates of this range are 20.6° S, 82.5° W, and the diameter is 791&nbs ... [...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] |
Lawrence Rooke
Lawrence Rooke (also Laurence) (1622–26 June 1662) was an English astronomer and mathematician. He was also one of the founders of the Royal Society, although he died as it was being formally constituted. Life He was born in Deptford, and was a great-nephew through his mother of Lancelot Andrewes.C. A. Ronan, ''Laurence Rooke (1622–1662)'', Notes and Records of the Royal Society of London, Vol. 15, (Jul., 1960), pp. 113–118. He was educated at Eton College and King's College, Cambridge, where he graduated M.A. in 1647. He became a fellow commoner at Wadham College, Oxford in 1650, having dropped out of academia for a period because of bad health.''Concise Dictionary of National Biography'' Andrew Pyle (editor), ''Dictionary of Seventeenth Century British Philosophers'' (2000), p. 691. At Wadham he worked closely with John Wilkins and Seth Ward. He became Professor of Astronomy at Gresham College in 1652, and then Professor of Geometry there, in 1657, an app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lowell (lunar Crater)
Lowell is a lunar impact crater that lies just beyond the western limb of the Moon. It is embedded within the northwestern part of the Montes Rook mountain ring of the Mare Orientale impact basin. This portion of the Moon's far side is sometimes brought into view of the Earth during periods of favorable libration and lighting, although it is only seen from the edge. The crater is circular in outline, with a well-defined edge. A small crater lies along the edge of the eastern rim. The inner wall is wider along the western side, and there are some terrace Terrace may refer to: Landforms and construction * Fluvial terrace, a natural, flat surface that borders and lies above the floodplain of a stream or river * Terrace, a street suffix * Terrace, the portion of a lot between the public sidewalk an ... structures. In the middle of the crater is a central peak on the interior floor. Satellite craters By convention these features are identified on lunar maps by placing the lett ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Libration
In lunar astronomy, libration is the wagging or wavering of the Moon perceived by Earth-bound observers and caused by changes in their perspective. It permits an observer to see slightly different hemispheres of the surface at different times. It is similar in both cause and effect to the changes in the Moon's apparent size due to changes in distance. It is caused by three mechanisms detailed below, two of which cause a relatively tiny physical libration via tidal forces exerted by the Earth. Such true librations are known as well for other moons with locked rotation. The quite different phenomenon of a trojan asteroid's movement has been called ''Trojan libration''; and ''Trojan libration point'' means Lagrangian point. Lunar libration The Moon keeps one hemisphere of itself facing the Earth, due to tidal locking. Therefore, the first view of the far side of the Moon was not possible until the Soviet probe Luna 3 reached the Moon on October 7, 1959, and further lunar exp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fryxell (crater)
Fryxell is a small lunar impact crater that lies amidst the western inner ring of the Montes Rook. It is named for Roald H. Fryxell, an American geologist. It was previously designated Golitsyn B, a satellite of Golitsyn, before being assigned a name by the IAU. This crater is located on the Moon's far side, at the extreme edge of the region of the surface sometimes brought into view of the Earth due to libration. Even under rare conditions of favorable lighting and libration, this area would only be seen from the side amidst a rugged range of mountains. Thus this crater is best observed from orbit. This formation is roughly circular, but with a slightly polygonal appearance. It is a bowl-shaped formation with a darker interior floor that is relatively featureless. The inner walls of Fryxell have a higher albedo Albedo (; ) is the measure of the diffuse reflection of sunlight, solar radiation out of the total solar radiation and measured on a scale from 0, corresponding to a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shuleykin (crater)
Shuleykin is a small lunar impact crater that lies to the south of Mare Orientale, within the ring-shaped Montes Rook. It is located just on the far side of the Moon, but this area can be viewed from the Earth during periods of favorable libration In lunar astronomy, libration is the wagging or wavering of the Moon perceived by Earth-bound observers and caused by changes in their perspective. It permits an observer to see slightly different hemispheres of the surface at different tim ... and lighting, although it can only be seen from the edge. This crater was formed following the Orientale impact event, and so is younger. It has a circular, sharp-edged rim and inner walls that slope down to the small interior floor. It has not been noticeably eroded by subsequent impacts. References * * * * * * * * * * * * {{refend Impact craters on the Moon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lallemand (crater)
Lallemand is a small lunar impact crater that lies near the western limb of the Moon, in a region where the visibility is affected by libration effects. Because of its location, when viewed from the Earth the crater is viewed nearly from the side, limiting the amount of detail that can be seen. It lies in the northeast part of a mountain range named the Montes Rook that forms a ring around the enormous Mare Orientale impact basin. To the northeast is the Lacus Autumni and to the northwest lies the Lacus Veris, both forming small lunar maria along the sides of the range. This is a roughly circular, bowl-shaped crater that lies along the northeastern edge of the Montes Rook. Its interior walls slope down to a small floor at the midpoint. This crater was previously designated Kopff A before being named for French astronomer André Lallemand by the IAU The International Astronomical Union (IAU; french: link=yes, Union astronomique internationale, UAI) is a nongovernmental organis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maunder (lunar Crater)
Maunder is a lunar impact crater that is located on the far side of the Moon, just beyond the western limb. This region is sometimes brought into view during favorable librations, but not much detail can be seen. The crater lies at the northern end of the Mare Orientale, within the ring of mountains named Montes Rook, and it is the largest crater on this lunar mare. To the southeast is the crater Kopff, and due south is the small Hohmann. The rim of Maunder is roughly circular, with a sharp edge that has not been significantly eroded. The inner walls are somewhat terraced, and slump down to a rough but level interior floor. At the midpoint of the crater is a double central peak, with the northeastern peak being the larger of the two. Surrounding the crater is a rough outer rampart that mixes with the rugged terrain along the northern half of the rim. Secondary impacts are visible in the surface to the south. Maunder is a crater of Eratosthenian age. Name origin The crater was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kopff (crater)
Kopff is a lunar impact crater that lies along the eastern edge of the inner Mare Orientale impact basin, on the western limb of the Moon. In this position the crater is seen from on edge from the Earth, and its visibility is affected by libration. This situation makes it difficult to discern much detail about the crater unless it is viewed from orbit. At one time this crater was considered to have formed due to volcanic activity,''The moon as viewed by lunar orbiter'', 1970, NASA SP-200 by L. J. Kosofsky, Farouk El-Baz in contrast to most lunar craters which are considered to have been created through impacts. However it is more likely that the crater was formed by an impact against a surface that was still partly molten. This has left the crater with a sharp-edged, circular rim and a flat, dark-hued interior floor. Indeed, the albedo of the interior floor matches that of the lunar mare to the west. The southeast part of the floor is fractured with a series of narrow rilles. The f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pettit (lunar Crater)
Pettit is a lunar impact crater that lies near the western limb of the Moon. It was named after American astronomer Edison Pettit. In this location the crater is viewed nearly from the side by observers on Earth, and visibility can be significantly affected by libration effects. The crater lies among the rugged features of the Montes Rook, the inner ring of mountains that surround the Mare Orientale impact basin. It is nearly a twin of the crater Nicholson which lies less than one crater diameter to the northeast. Another similar formation is Wright almost due south. The rim of this crater has something of the appearance of a rounded hexagon, with slightly flattened rims to the east and west. The rim is sharp-edged, and the inner wall material has slumped down to lie in a pile around the base. The interior floor is a rugged jumble, with a small central peak and hills to the north and west. Beyond the rim lies rugged terrain to the north and west, while the ground becomes less jumb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicholson (lunar Crater)
Nicholson may refer to: People *Nicholson (name), a surname, and a list of people with the name Places Australia * Nicholson, Victoria * Nicholson, Queensland * Nicholson County, New South Wales * Nicholson River (other) * Nicholson Road, Perth * Nicholson Street, Melbourne Hong Kong * Mount Nicholson, Hong Kong Island New Zealand * Port Nicholson, former name of Wellington Harbour, New Zealand United States * Nicholson, Georgia * Nicholson Island (Pennsylvania) * Nicholson, Mississippi * Nicholson, Pennsylvania * Nicholson, Wisconsin * Nicholson Township, Fayette County, Pennsylvania * Nicholson Township, Wyoming County, Pennsylvania * Dr. Malcolm Nicholson Farmhouse, a historic farmhouse in Havana, Florida Craters *Nicholson crater, in Canada *Nicholson (lunar crater) *Nicholson (Martian crater) Other uses * Crest Nicholson, British housebuilding company * ''Fanny Nicholson'', Australian sailing ship that sank in 1874 * Nicholson's, a brewery in Maidenhead from 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerard Kuiper
Gerard Peter Kuiper (; ; born Gerrit Pieter Kuiper; 7 December 1905 – 23 December 1973) was a Dutch astronomer, planetary scientist, selenographer, author and professor. He is the eponymous namesake of the Kuiper belt. Kuiper is considered by many to be the father of modern planetary science. Early life and career Kuiper, the son of a tailor in the village of Tuitjenhorn in North Holland, had an early interest in astronomy. He had extraordinarily sharp eyesight, allowing him to see with the naked eye magnitude 7.5 stars, about four times fainter than those visible to normal eyes. He studied at Leiden University in 1924, where at the time a very large number of astronomers had congregated. He befriended fellow students Bart Bok and Pieter Oosterhoff, and was taught by Ejnar Hertzsprung, Antonie Pannekoek, Willem de Sitter, Jan Woltjer, Jan Oort, and the physicist Paul Ehrenfest. He received his candidate degree in Astronomy in 1927 and continued straight on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
