October 21, 2015 Watch live: Asteroid the size of three football fields to hurtle past Earth A gigantic asteroid nearly 900 feet wide will race past planet Earth tonight, a harmless but sobering reminder of the dangers posed by such interplanetary visitors.
October 21, 2015 Failure to launch? Trouble for Virgin Galactic, Spaceport America Built with $212 million in state taxpayer money, Spaceport America is drawing heat from lawmakers -- and a just-released book questions whether anchor tenant Virgin Galactic will ever get off the ground.
October 21, 2015 How flying snakes are like UFOs A flying snake flattens out into a weird flying-saucer shape in order to get some extra airtime, new research suggests
October 21, 2015 Air Force's mysterious X-37B space plane passes 400 days in orbit The U.S. Air Force's unmanned X-37B space plane has now circled Earth for more than 400 days on a hush-hush mission that is creeping closer and closer to the vehicle's orbital longevity record.
October 21, 2015 Five NASA Earth-science missions blasting off in 2014 The launch of a precipitation-measuring satellite next month kicks off a busy year for NASA's Earth-observation program.
October 21, 2015 Astronauts make rare Christmas Eve spacewalk Two space station astronauts popped in a new pump during a rare Christmas Eve spacewalk Tuesday, eager to wrap up urgent repairs to a cooling system.
October 21, 2015 Former Apollo 8 astronaut marks anniversary of 1968 Christmas Eve broadcast to Earth Millions tuned in on Dec. 24, 1968, when Commander Frank Borman, Bill Anders and James Lovell took turns reading from the Book of Genesis as the Apollo 8 orbited the moon.
October 21, 2015 Snorkels in space: NASA's 'MacGyver' solution to protect spacewalking astronauts After a spacewalking astronaut nearly drowned in his helmet in July, NASA has a plan to protect its crew when they venture into the vacuum of space this weekend: snorkels and towels.
October 21, 2015 NASA orders urgent spacewalks to fix space station NASA has ordered up a series of urgent spacewalks to fix a broken cooling line at the International Space Station.
October 21, 2015 Rest in pieces: Comet ISON officially dead, Sun chief suspect Comet ISON, once optimistically called the comet of the century, is dead, the victim of a way-too-close brush with the sun. It was barely a year old.