Mars is the fourth planet from the sun and has a distinct rusty red appearance and two unusual moons. The Red Planet is a ...

Of all the things that have happened in planetary science over the last two years, none has stirred up more debate among researchers than a 3.2-foot reddish rock sitting in a sealed titanium tube on ...

Drone-mounted radar flown over glaciers on Earth show how the technology can map buried ice in detail, helping future Mars spacecraft choose exactly where to drill.