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NASA study paving way for human travel to Mars

The 10 biggest spaceflight stories of 2016

NASA scientists reveal how 'spiders' grow on Mars

Huge underground ice deposit on Mars is bigger than New Mexico

Did NASA Mars Rover find a signature of past life?

National Geographic Channel's 'MARS' explores colonization of the red planet

Strange feature on Mars is a good place to look for life, study says

The future of space: Top issues facing President-elect Donald Trump

NASA researchers 'seek intelligent life' in Hawaiian volcanoes

See the 1st color photos of Europe Mars lander's crash site