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A small piece of space junk drifted dangerously close to the International Space Station on Tuesday, prompting NASA to order the three astronauts to seek shelter in their attached capsule....

Evidence that there is life from beyond Earth has allegedly come hurtling through the sky.

Discovery, the world's most traveled spaceship, left the International Space Station on Monday for the last time, getting a dramatic send-off by the dozen orbiting astronauts as well as "Star Trek's" original Capt. Kirk.

Discovery astronauts Stephen Bowen and Al Drew ventured outside the International Space Station today while the original lead spacewalker for ...

NASA's shuttle Discovery is fit as a fiddle for its planned launch tomorrow (Feb. 24), setting the stage for the spacecraft's final trip to the International Space Station, space agency ...

Gov. Susana Martinez has vowed to privatize Spaceport America, saying taxpayers have already paid their fair share.

Science editor Alan Boyle's Weblog: Is it preposterous to consider the existence of parallel universes? Or is it preposterous not to? Physicist Brian Greene would tend toward the latter view.

The European project to develop a space plane to take fare-paying passengers above the atmosphere is still very much alive, says EADS Astrium.

Towards the end of 2011 a large and hugely expensive robotic rover called Curiosity is due to blast off for Mars from Cape Canaveral. If it makes it safely to the planet’s surface in August 2012 one of the first things it will do is sniff the air. Its creators, back on Earth, will be straining to see if that air carries a whiff of methane.

Our cosmos was "bruised" in collisions with other universes. Now astronomers have found the first evidence of these impacts in the cosmic microwave background.