A backup version of Skylab was displayed when the Smithsonian’s National Air and Space Museum opened 50 years ago. After renovation of the building, the artifact is once more on view in a new gallery ...

Somewhere in the Mojave Desert, a gleaming white dome sits in the middle of nowhere, and the story behind it is stranger than ...

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

E.T. the Extra-Terrestrial was a global phenomenon that spawned many knockoffs, with films like Purple People Eater, Badi, ...

Somewhere out there, a planet roughly the size of Earth may be orbiting a distant star in conditions that could support life.

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?

The best way to find alien technosignatures is to look for ones that have long survived their creators, according to a new paper.

Our search for technosignatures—clear signs of advanced civilizations beyond Earth—takes many forms. Many are driven by the famous Drake equation, which attempts to estimate how many technological ...

Those pesky space aliens are at it again … or I should say, conspiracy theorists’ hopes, dreams, fantasies and wish fulfillment, along with a combination of government reluctance to give adversaries ...

Obsession is maybe too hard-edged; interest too soft. But from “Close Encounters of the Third Kind” and “E.T” to his new sci-fi thriller “Disclosure Day,” Steven Spielberg has spent nearly the entire ...