'Star Trek' on Mars? Curiosity rover spots Starfleet symbol on Red Planet

NASA Selects New Technology to Help Search for Life on Mars

Water may have flowed intermittently in Martian valleys for hundreds of millions of years. Using impact craters as a dating tool, researchers determined maximum timescales for formation of Martian valley networks shaped by running water - which has big implications for early Mars' habitability.

NASA's troubled Mars sample-return mission has scientists seeing red