Add Yahoo as a preferred source to see more of our stories on Google. This image of interstellar comet 3I/ATLAS was captured by the Hubble Space Telescope's Wide Field Camera, July 21, 2025. (photo ...

A mysterious object was seen on SpaceX's livestream of its Starship rocket on Monday. Many viewers suggested it was a UFO, ...

For over six decades, the Search for Extraterrestrial Intelligence (SETI) has been tirelessly scanning the cosmos for signs of alien life. Despite its extensive efforts, the universe remains eerily ...

When/if alien life ever cruises toward Earth in big spaceships, we’re probably not just going to see it; we’re going to hear it via narrow radio signals. If an extraterrestrial civilization wanted to ...

If ancient alien explorers ever traipsed through Earth's cosmic neighborhood, could it be possible they left behind some interstellar litter on the moon?

The movies with aliens that most appeal to the cosmic sensibilities of . Excluding Star Wars, Star Trek, and superheroes. In alphabetical order, but beginning with that unavoidable ...