Makes you wonder what would happen were Mars to be hit with a giant asteroid.
Red Planet’s Ancient Equator Located
http://www.freerepublic.com/focus/chat/1390424/posts
Giant Impact Basins Trace the Ancient Equator of Mars
http://www.agu.org/pubs/pip/2004JE002343.pdf
New Theory: Catastrophe Created Mars’ Moons
http://www.freerepublic.com/focus/news/954539/posts