Friday, August 06, 2010

UA camera finds bulls-eye on Mars

The UA-run HiRISE camera on the Mars Reconnaissance Orbiter spotted this unusual "bulls-eye" crater on Mars. Project member Sarah Milkovich told that it could be either due to uneven erosion due to weak layers underlying the crater or a fortuitous second impact right in the center of the larger crater.

[Photo credit: NASA/JPL/University of Arizona]

1 comment:

  1. Phil at Bad Astronomy posted about this same crater with some interesting extra details and ideas that make me think the second impact idea is not what happened