Scientists may be one step closer in their hunt for signs of past life on Mars after the Curiosity rover's latest find.

This isn’t the famous sample reported last September, but another with different signs of past life we’re struggling to ...

Mars has never looked more like a planet built for hiding secrets. A cluster of eight vast, water-carved caves appears almost engineered to shield fragile chemistry, or even biology, from the brutal ...

Add Yahoo as a preferred source to see more of our stories on Google. Yellow crystals that were revealed after NASA’s Curiosity happened to drive over a rock and crack it open A rock on Mars spilled a ...