Lunar Orbiter 2 image | |
Coordinates | 29°18′S178°42′W / 29.3°S 178.7°W Coordinates: 29°18′S178°42′W / 29.3°S 178.7°W |
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Diameter | 125 km |
Depth | 2.4 km |
Colongitude | 180° at sunrise |
Eponym | Antony van Leeuwenhoek |
Leeuwenhoek is a lunar impact crater that lies in the Moon's southern hemisphere, on the far side from the Earth. It is located to the east of the crater Birkeland and the unusual double crater Van de Graaff. To the northeast of Leeuwenhoek is Orlov and to the south is the large walled plain Leibnitz.
Lunar craters are impact craters on Earth's Moon. The Moon's surface has many craters, almost all of which were formed by impacts.
An impact crater is an approximately circular depression in the surface of a planet, moon, or other solid body in the Solar System or elsewhere, formed by the hypervelocity impact of a smaller body. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. Impact craters range from small, simple, bowl-shaped depressions to large, complex, multi-ringed impact basins. Meteor Crater is a well-known example of a small impact crater on Earth.
Earth's Moon is an astronomical body that orbits the planet and acts as its only permanent natural satellite. It is the fifth-largest satellite in the Solar System, and the largest among planetary satellites relative to the size of the planet that it orbits. The Moon is, after Jupiter's satellite Io, the second-densest satellite in the Solar System among those whose densities are known.
The outer rim of Leeuwenhoek is worn and eroded, forming an irregular mountainous ring about the relatively level interior floor. The inner wall is wider along the western and southern sides, offsetting the floor to the northeast. At the midpoint of the interior is a central peak formation. There are a pair of small craterlets on the floor and several tiny craters. Leeuwenhoek partly overlaps the satellite crater Leeuwenhoek E to the northeast.
By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Leeuwenhoek.
Leeuwenhoek | Latitude | Longitude | Diameter |
---|---|---|---|
E | 28.2° S | 176.7° W | 117 km |
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Chebyshev is a large lunar impact crater that lies in the southern hemisphere on the far side of the Moon. The somewhat smaller crater Langmuir is intruding into the east-southeastern rim of Chebyshev, forming a chain of large craters with Brouwer on Langmuir's eastern rim.
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Ewen Adair Whitaker was a British-born astronomer who specialized in lunar studies. During World War II he was engaged in quality control for the lead sheathing of hollow cables strung under the English Channel as part of the "Pipe Line Under The Ocean" Project (PLUTO) to supply gasoline to Allied military vehicles in France. After the war, he obtained a position at the Royal Greenwich Observatory working on the UV spectra of stars, but became interested in lunar studies. As a sideline, Whitaker drew and published the first accurate chart of the South Polar area of the Moon in 1954, and served as director of the Lunar Section of the British Astronomical Association.
The National Aeronautics and Space Administration is an independent agency of the United States Federal Government responsible for the civilian space program, as well as aeronautics and aerospace research.
The United States Geological Survey is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization has four major science disciplines, concerning biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility.