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December test flight huge for NASA's next manned spacecraft

Spacecraft-riding microbes could colonize Mars, research suggests

NASA's Mars Orbiter sidelined by glitch

Live from Mars: Mission to beam video back to Earth in 2018

Meet the next Martians: Aspiring Red Planet colonists

'Mars rat' spied by NASA's Curiosity rover

Farming on Mars? NASA ponders food supply for 2030 mission

78,000 apply for private Mars colony project

Too soon to declare 'life' on Mars, NASA says

Evidence indicates astronauts could survive on Mars