This process helps scientists trace the fate of Mars' water over billions of years and offers new clues about the Red ...

Scientists know that over the last 3 billion years, at least some water went deep underground, but what happened to the rest?

A NASA spacecraft has entered Mars orbit as it begins to hunt for the Red Planet's lost water. The Maven probe travelled 442 million miles at 12,800 mph to reach its destination during an epic 10 ...