Messier & Messier A
                                Earth-based telescopic image                                          Apollo 11 image
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Larger version of above
 Image by Legault
Full-sized version of Apollo 11 image
 A11_MP.Orbital4FS
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Brief
Messier is an oval crater elongated in an E-W direction. Its size is 9 x 11 km and it may have originated as the result of an oblique meteorite impact from space. Messier A comprises two circular craters: The younger, eastern crater overlaps part of the smaller, older formation. This twin crater measures 11x13 km.  To the west, two straight narrow rays, resembling the tail of a comet, trail across the surface of Mare Fecunditatis to a distance of about 120 km. 
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Other Lunar Orbiter images
  http://cass.jsc.nasa.gov/research/lunar_orbiter/img/4-60H3.jpg

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For the latest information and images regarding this section, including Apollo Hasselblad (H), Metric (M), and Panoramic (P) images, go to:
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This web page was created by Francis Ridge for The Lunascan Project:
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