When the astronauts stranded at the International Space Station were pictured wearing Santa hats next to a tiny Christmas tree this week, internet commenters had questions.

You might think that the most likely place for a NASA astronaut to see an unidentified flying object would be while orbiting ...

NASA astronaut Donald Pettit shared a mesmerizing aurora video from space, sparking online debate, with some questioning its authenticity and others admiring its beauty.

Nasa’s holiday video from the ISS, featuring astronauts in Santa hats and a Christmas tree floating in zero gravity, has sparked online conspiracy the ...

NASA astronaut Don Petit's video of an aurora has gone viral on social media. He is currently in the ISS for approximately ...

Most of the Expedition 72 crew enjoyed a day off on Tuesday, while two NASA astronauts focused on cutting-edge human research ...

All of this adds up to the likelihood, the ESA warns, that a theoretical scenario known as the Kessler Syndrome could become ...

The vintage NASA photos include Earthrise, which was captured by the crew of Apollo 8 as they orbited the Moon.

NASA astronauts Sunita Williams and Barry "Butch" Wilmore celebrated Christmas aboard the ISS, wearing Santa hats in a photo ...

Astronauts stationed on the International Space Station marked Christmas with a special message for those on Earth, ...

The space station sees 16 sunrises and 16 sunsets every 24 hours. So how will the crew there know when it's 2025?