Why is Mars barren and uninhabitable, while life has always thrived here on our relatively similar planet Earth?

NASA has found a rock on Mars that it has dubbed Skull Hill. The rock is known as a "float rock," and NASA has no idea where it came from.

UChicago-led analysis of Mars Science Laboratory Curiosity rover data may explain why planet was likely harsh desert for most ...

NASA has discovered an interstellar comet that's wandered into our backyard. The space agency spotted the object with the sky ...

Scientists have discovered small, potentially habitable areas on Mars where life could, in theory, transform sunlight, water, and carbon dioxide into oxygen, according to a new NASA study.. Though ...

The Perseverance rover finds a mysterious black rock on Mars, “Skull Hill,” which intrigues scientists because of its ...

July 26 (UPI) --Spots found on a reddish Mars rock found by NASA's Perseverance rover have led scientists to believe the chemical reactions in the rock could have supported microbial life on the ...

Scientists first discovered these spider-like features, or araneiform terrain, on Mars in 2003 while studying images from orbiters. They're much, much larger than spiders, though; they can stretch ...