Behold, directly overhead, a certain strange star was suddenly seen...
Amazed, and as if astonished and stupefied, I stood still.

— Tycho Brahe

Scientists Think Big Object Whacked Mars

By kuky at Thu, 06/26/2008 - 12:28pm

LOS ANGELES (June 25) - Why is Mars two-faced? Scientists say fresh evidence supports the theory that a monster impact punched the red planet, leaving behind perhaps the largest gash on any heavenly body in the solar system.

See full article:

http://news.aol.com/story/_a/scientists-think-big-object-whacked-mars/20...