While 3I/ATLAS is definitely a comet, its composition and age have remained unclear. Now, astronomers have solved these ...

In 1977, Brazil witnessed mysterious UFO encounters known as 'Chupa-Chupa', involving unexplained injuries and a military ...

Stacker compiled a ranking of cities with the most UFO sightings in Maine using data from the National UFO Reporting Center.

This article was originally published Oct. 21, 2021. It has been updated for spelling as well as the addition of this 1990 On The Record interview: LAS VEGAS (KLAS) – The atomic age officially began ...

This is to do with something called object permanence, an idea of understanding that even when you can't see something, it still exists, something that babies genuinely do struggle with. So how about ...

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the Trump administration to ...

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

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

An interstellar comet that blazed past the sun and swung by Earth last year could be nearly three times older than our solar system and is unlike anything ever before seen in our cosmic backyard, ...