Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Steven Spielberg may have recently returned to the sci-fi genre with Disclosure Day, but for many, E.T. the Extra-Terrestrial is considered one of the high-points in the filmmaker's storied career.

Interstellar comet 3I/ATLAS carries isotopic ratios entirely outside the Solar System range, ESO’s Very Large Telescope has ...

A nearby 'super Earth' in one of the closest star systems to our own appears far more likely to support alien life than first ...

Lovable alien E.T. the Extra-Terrestrial will soon be able to buy and build in LEGO form, with movable appendages and a light ...

Antarctica’s biggest secrets are not alien bases or hidden bunkers, but a buried world scientists are only beginning to map.

The makers of the blockbusting sci-fi thriller reveal how they made a hit, why Kevin Spacey was almost involved and what went wrong with the sequel ...

When Gene Roddenberry created "Star Trek" in the 1960s, he instituted several rules for starship design that are still ...

While telescopes like the James Webb Space Telescope (JWST) can detect the chemical fingerprints of distant atmospheres, ...

This eBay listing for never produced, alleged "Planet of the Apes" action figures is a puzzling mystery for toy collectors.

From The Thing to Blade Runner, Aliens to Tron, these ’80s sci-fi classics prove practical effects can still outshine modern ...

“Human beings have a remarkable ability to accept the abnormal and make it normal,” observes Ryland Grace, the main protagonist of Project Hail Mary, as he floats alone in interstellar space, millions ...