From unforgettable classics to modern sci-fi hits, these Hollywood alien films have captivated audiences for decades.

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

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

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

An interstellar comet that blazed past the sun last year could be nearly three times older than our solar system and is ...

A look at 10 of the greatest alien sci-fi movies, from Ridley Scott's Alien to Denis Villeneuve's Arrival, none by Steven ...

Alien invasion stories have been around for decades, and some of sci-fi's most interesting entries are often overlooked or ...

These wildly different films explore the wondrous, and sometimes terrifying possibilities of contacting extra-terrestrial life.

Alien invasion movies don’t always send us into orbit, but there are more than a few we consider to be out of this world. And the thing about UFO films is, even when they are bad, they can be a total ...

This article was featured in the One Story to Read Today newsletter. Sign up for it here. When President Trump promised, in a social-media post in February, “to begin the process of identifying and ...