Does Saturn's 'Death Star' Moon Harbor A Hidden Ocean?

It's not the prettiest thing in the solar system, nor is it the most interesting. But Mimas — a pockmarked moon in orbit around Saturn — does exhibit a rather strange wobble. A team of astronomers say there can only be one of two explanations: either it's harbouring a subterranean ocean or it has an irregularly shaped… » 10/17/14 10:20am 10/17/14 10:20am

These Insanely Detailed Maps Of Mars Are The Most Accurate Yet

After 16 years of painstaking work, the U.S. Geological Survey has released a series of geologic maps that offer the most thorough representation of the Red Planet's surface to date. The revealing project will help mission planners target future areas for robotic — and potentially human — exploration. » 7/15/14 8:00am 7/15/14 8:00am