Researchers from NASA and the European Space Agency are examining the effects of spaceflight on the brain.
Virgin Galactic just pushed its flagship aircraft higher and faster than ever before. Here's a look at the SpaceShipTwo in action.
This uranium-based reactor would use nuclear fission energy to power small spacecraft and possibly installations on Mars.
The space agency's Commercial Crew Development effort directs a big chunk of change to four private enterprises, including Jeff Bezos' Blue Origin and Elon Musk's SpaceX.
Today's Google doodle -- the company logo on Google's home page -- and a new documentary commemorate the 50th anniversary of Yuri Gagarin becoming the first man in space.
Today marks the day in history when the first human died during a spaceflight.
In a dramatic break with the past, the Obama administration's 2011 NASA budget ends the agency's moon program and calls for shifting manned launches to private industry.
Not content with conquering the heavens with commercial spaceflight outfit Virgin Galactic, Richard Branson is taking on the deep, diving into a new venture: Virgin Oceanic.
In a Russian research facility, six men are closed into spacecraft-like quarters for 105 days to see how a crew might fare on a trip to the Red Planet. And that's the short trial run.
Why go to space? And how? Space journalist Miles O'Brien and Commercial Spaceflight Federation president Bretton Alexander talk about how our space program has changed since Apollo, whether we're going back to the moon, and the need for the "Interstate for Space."