An unexpected guest greeted the Artemis II crew upon their return to Earth, and the footage has quickly gone viral.

Add Yahoo as a preferred source to see more of our stories on Google. After their historic trip around the moon, the Artemis II astronauts were greeted by a blow-up alien on board the Navy ship John P ...

Former NASA astronaut Mike Massimino, known for his work on the Hubble Space Telescope and who flew on two space missions, has weighed in on one of humanity's biggest questions: Are we alone in the ...

A strange, tentacled object floating aboard the International Space Station recently sent the internet into a frenzy, with many mistaking it for something straight out of a science fiction film. The ...