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Most lunar meteorites are launched from the Moon by impacts making lunar craters of a few kilometers in diameter or less. [6] No source crater of lunar meteorites has been positively identified, although there is speculation that the highly anomalous lunar meteorite Sayh al Uhaymir 169 derives from the Lalande impact crater on the lunar ...
The rotational axis of the Moon passes through Shackleton, near the rim. The crater is 21 km (13 miles) in diameter and 4.2 km (2.6 miles) deep. [2] From the Earth, it is viewed edge-on in a region of rough, cratered terrain. It is located within the South Pole–Aitken basin on a massif. [3]
Allan Hills A81005 or ALH A81005 (sometimes also named without the "A" in front of the number) was the first meteorite to be recognised as a lunar meteorite.The meteorite Yamato 791197 was discovered in 1979 but its lunar origin was not recognised until 1984. [3]
The moon has been constantly bombarded by meteorites - early in its history by large ones that gashed the gaping craters visible on the lunar surface and more recently by smaller ones including ...
Nicholson is a lunar impact crater located at the western limb. In this position it is subject to libration, which can limit observation.The crater is also viewed at a very oblique angle, so it is seen from the side when observed from the Earth.
During the 1960s, rectified images of Mare Orientale by Gerard Kuiper at the Lunar and Planetary Laboratory gave rise to the notion of it being an impact crater. [3] [4] The structure, with the flat plain of the mare in the center, is about 900 kilometres (560 mi) across and was formed by the impact of an asteroid-sized object, [5] [6] possibly 64 km (40 mi) in diameter and travelling at 15 km ...
An Up-to-Date List of Lunar Meteorites — Washington University in St. Louis. Lunar meteorites Archived 2011-04-13 at the Wayback Machine — Washington University in St. Louis. Taylor, G. J. (Oct., 2004) New Lunar Meteorite Provides its Lunar Address and Some Clues about Early Bombardment of the Moon. Planetary Science Research Discoveries.
The crater is named for German physicist and musician Ernst Chladni who, [1] in 1794, wrote the first book on meteorites. [2] The rim of the crater is roughly circular, and there is a small central floor at the midpoint of the sloping inner walls.