No, it's not the next big reality TV show (though it sounds like it could be): six researchers are going to spend a whopping 520 days inside Mars500, a Russian-built, facility-sized simulator that approximates the enormous effort a trip to...

If University of Chicago geoscientist Patrick McGuire starts calling the shots, NASA won't have to decide between sending a person or a robot into space. They could just send a "cyborg astrobiologists" — or advanced artificial intelligence riding piggyback on...

The budgetary review of NASA ordered by President Obama has found that the program needs quite a bit more money than previously thought to reach its goal of getting back to the moon by 2020: $3 billion more yearly is...