December 13, 2012 Commercial space travel is becoming a reality. Now people who have longed to go into space can buy a ticket, if they've got the cash. But are they healthy enough to make the voyage?
December 13, 2012 Given the history of first orbital space shots, North Korea's apparent struggle with its mission is fairly typical, experts say.
December 7, 2012 It's been 40 years since NASA launched Apollo 17, its final human mission to the moon. The commander of that mission says he'd love to give up his claim to fame as "the last man on the moon" but concedes that it probably won't happen in his lifetime. And future trips might be run by companies in the private sector.
December 5, 2012 "The night is nowhere as dark as we might think," says one scientist. How does your location light up the night?
December 2, 2012 There's a possibility the Mars rover has found signs of carbon-containing molecules on the red planet. That discovery is exciting because of what it might say about the Martian environment where the rover is sitting at the bottom of Gale crater.
November 26, 2012 NASA astrobiologist David Morrison has taken it upon himself to answer hundreds of questions about the science of doomsday predictions. At NASA's Ask an Astrobiologist site, Morrison thoughtfully responds to questions like: Will we have Christmas this year?