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Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. NASA has announced ...

New Delhi, India: Former NASA astronaut Leroy Chiao revealed a chilling encounter with unidentified flying ... “They weren’t visible on radar, air traffic control didn’t alert me, and my onboard ...

Two NASA astronauts who flew up to the International Space Station in a Boeing Starliner capsule for a round trip that was supposed to last just over a week will be stuck in space for closer to a ...

Skylab 4 astronauts Gerald P. Carr, Edward Gibson and William Pogue made up the first crew to celebrate the holiday in space on November 22, 1973. Skylab was the nation’s first space station.

Astronauts on the International Space Station ... open image in gallery A close-up shot shows the Thanksgiving dinner items on the space station in 2013. The food includes turkey, ham, macaroni ...

China says two of its astronauts completed a nine-hour spacewalk Tuesday, a figure that beats the US-held record for the world’s longest spacewalk set in 2001, in the latest milestone in the ...

A Utah trip to enjoy the snow nearly ended in tragedy Tuesday when an avalanche struck a snowmobiler on a backcountry ...