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

There might be alien life on a nearby moon, scientists say - Saturn’s companion Enceladus has long been a particularly ...

A strange interstellar comet discovered last year and speculated by a prominent astronomer to be an alien spacecraft could be older than our Solar System, according to a new study. The comet, first ...

Saturn's moon may aid in the search for alien life by making some ocean compounds easier for future spacecraft to detect.

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?

(CNN) — Americans’ opinion of space exploration is pretty high. In an Ipsos poll conducted last week just after the launch of Artemis II, US adults say, 62% to 34%, that the benefits of NASA sending ...

A strange interstellar comet discovered last year and speculated by a prominent astronomer to be an alien spacecraft could be older than our Solar System, according to a new study. The comet, first ...