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Messier: The Coffee Bean Crater

12 Nov 2012, 05:00 UTC
Messier: The Coffee Bean Crater
(200 words excerpt, click title or image to see full post)

bigger image One of the must see telescopic sights on the Moon is the pair of young craters Messier and Messier A. They are located in Mare Fecunditatis and are thought to have formed from the same single low angled impactor moving right to left. The main impact created Messier and a secondary impact (either [...]

bigger image
One of the must see telescopic sights on the Moon is the pair of young craters Messier and Messier A. They are located in Mare Fecunditatis and are thought to have formed from the same single low angled impactor moving right to left. The main impact created Messier and a secondary impact (either a bounce of the main impactor or separate chunk of it) created Messier A and the rays. A second (and more overhead) impact in Messier A made it a double crater. Messier crater is 1.3 km deep, 11 km long and 8 km wide. Messier A is 11 km long and 13 km wide. The elongated shape of the craters is characteristic of a low angled impact.
Being very small they are challenging to spot in a small telescope. You are more likely to see the two prominent white ...

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