Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks are enormous.

From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

Extraterrestrials are already here on Earth, disguised as humans or living in secret bases hidden underground or even on the far side of the moon, according to a shocking new scientific paper from Ivy ...

If an alien intelligence were hiding somewhere on Earth, many scientists suspect it might look something like an octopus.Get ...

Noah Hawley has brought the sci-fi/horror series to television. Many filmmakers have taken on the "Alien" franchise: James Cameron, David Fincher, Fede Álvarez. Ridley Scott even returned to the well ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life. Tardigrades—a type of invertebrate ...

As much as Steven Spielberg likes aliens, he seems to prefer holding them at arm’s length. The creatures in Close Encounters ...

There’s no data to suggest that aliens exist. However, if we believed they existed and came to Earth, our planet would offer ...