Astronauts train to scale a Mars volcano at an analogue site in France. Lava tubes that crisscross the Martian surface might provide sanctuaries for the first human explorers on the Red Planet. (Photo ...

NASA's simulated Mars program was a "success," according to Dr. Suzanne Bell. NASA is readying to send astronauts to Mars by the 2030s and the agency's first, yearlong simulated mission took one giant ...

The Lafayette meteorite was discovered in a drawer at Purdue University in 1931, with no clear indication of how it got there. A new analysis of the rock reveals evidence of liquid water on Mars 742 ...

NASA's Curiosity rover revealed an 'oasis' of rare elemental sulfur on Mars after accidentally crushing a rock with its tires. The yellow crystals have never been spotted on the Red Planet before.