Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House ...

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 ...

A study suggests that stellar plasma may distort alien signals, complicating SETI's search for extraterrestrial life by pushing signals below detection thresholds.

With the release of Disclosure Day, Steven Spielberg’s new film about aliens, a question as old as science fiction itself resurfaces: if aliens were to arrive on Earth, would they come to conquer us, ...

The Independent and Yahoo will earn a commission from purchases made via links in this article. Pricing and availability are subject to change. Scientists have searched one of the only known visitors ...

The mysterious metal spheres that washed up on a beach in northern Queensland over the weekend are likely to be debris from a ...

"Disclosure" has become a cult word. It shouldn't be, since all it means, technically, is to reveal something. But the new wave of alien conspiracy theorists have made "disclosure" into a teasingly ...

Loeb's team will report to a new White House panel focused on UFOs, now often referred to as unidentified anomalous phenomena, or UAP. Avi Loeb, a cosmologist who studied black holes and served as ...