NASA's Mars rover Perseverance has uncovered rocks in a dry river channel that may hold potential signs of ancient microscopic life, scientists reported Wednesday. They stressed that in-depth analysis ...

NASA's Curiosity rover snapped this view of polygon-patterned bedrock on May 4. Mars is home to a lot of odd-shaped rocks that can look pretty random. Patterns, however, can catch scientists’ eyes.

A NASA rover taking rock samples on Mars has uncovered a plentiful mineral that was invisible to orbiters studying the Red Planet from space. Scientists say the discovery of siderite, a type of iron ...