This video breaks down why K2-18b has suddenly become one of the most important planets in the search for life beyond Earth.

"Eventually, our own Voyager spacecraft will be extraterrestrial artifacts in other stellar systems." ...

James Franco has concerned fans with a series of bizarre videos in which he claims there's an alien in his garage. The ...

Two illegal aliens were sentenced in federal court in Texas for their roles in a child sex trafficking case, according to DHS.

A Stanford scientist's model suggests many small rocky planets can't sustain atmospheres, potentially explaining the scarcity ...

Iowa's largest school district ex-superintendent sentenced to prison for illegally possessing firearms while living in the ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

Researchers have looked at how particular microbes from Earth would fare in conditions like those of Mars, the moon, and the ...

Well, as a matter of fact, I have often had close encounters with aliens, only I never bothered to mention it here. For this ...

The SETI Institute is the latest to confirm what scientists have long suspected: the interstellar 3I/ATLAS comet is not an alien spaceship.

Astronomers have recently started looking for black holes bigger than galaxies. Brian Lacki explains how these “stupendously ...