Molten Planet

New research suggests that Mars remained a molten, red hot planet for tens of millinos of years longer than previously imagined. This is found from Mars' meteorites that have found there way to earth. Scientists think that to explain this longer length of hotness, a early thick atmosphere is responsible. Basically, something like a rocky crust or a thick atmosphere is needed as an insulatro to kept Mars hot. This is why the atmosphere is suggested. Scientists also believe that a global magma ocean existed in the final stages of formation and slowly solidfied. To read more check out: http://www.space.com/scienceastronomy/071127-st-molten-mars.html