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

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

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

Researchers propose turning a future NASA moon base into a quarantine station that would screen space samples before they ever reach Earth.

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

God and aliens are having a moment. But what do Christianity and other faiths really teach about ETs?