NASA’s OSIRIS-REx Team Triumphs Over Fasteners – Gains Access to Remaining Asteroid Sample
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