"Robot launched to Mars’ atmosphere" Associated Press, November 19, 2013
CAPE CANAVERAL, Fla. — A quest to unravel the ancient mystery of the red planet’s radical climate change....
How about worrying why its freezing cold with snow down here instead?
Scientists want to know why Mars went from being warm and wet during its first billion years to cold and dry today. The early Martian atmosphere was thick enough to hold water and possibly support microbial life.
Related: Life on Mars
But much of that atmosphere may have been lost to space, eroded by the sun....
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Related: Sunday Globe Special: Mars Madness
Also see: Billionaire proposes trip to Mars
