Curiosity makes its first major discovery on Mars — and it’s a doozy

NASA scientists working with Curiosity have announced that water did indeed flow on Mars at one point in its history — and we're not talking trickles. A newly discovered ancient streambed indicates that the water ran fast and deep, possibly as much as hip deep. The discovery marks a precedent setting achievement for… » 9/28/12 7:40am 9/28/12 7:40am