Crater Billy
Date: 16 Feb 2006
Billy is filled with dark mare material and is one of the darkest spots on the lunar surface. The crater is deemed to be of age class 5 - indicating an ancient crater [in this case at least 3.2 billion years old] and filled, or partially filled with lava. The image represents a composite made from two raw images (i.e. no flat field or other corrections have been applied) of the region taken one orbit apart.
Last Update: 09 Mar 2006
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![Hi-Res [jpg] 248.89 kb.](../../../science-e-media/img/a5/Crater billy composite.jpg){kind=link}