"Star Trek" is home to countless alien species, many of whom offer beloved characters. Some are not. We rank the 10 most ...

The research is mounting up that we might not be alone in this big wide world. So what's the likelihood that aliens are out ...

A mysterious metal shard, once thought to be a piece of a UFO that crashed in 1947, has sparked years of wild speculation.

The first unmistakable signal from another intelligence would rank alongside fire and writing in the story of our species, ...

Fans of the Predator franchise should check out these 15 other movies featuring alien threats, outer-space terror, and ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

The best reason to send humans to Mars isn’t for guts or glory—or the construction of colonies to safeguard against existential Earth-bound risks. Instead it’s to answer a single, simple question: Is ...

Despite seeing plenty of action in the MCU, the Avengers still have some powerful villains waiting in the wings.

A quiet confession from Zosia exposes how the Others crossed Carol’s boundaries, turning a fragile romance into a catalyst ...

The Kepler-22b reveal flips the storyline of the series. What started as a story about Earth going through a bizarre transformation suddenly feels way more like cosmic horror. In Pluribus Episode 8, ...

Pluribus Season 1 presents a fascinating sci-fi mystery and leaves viewers with plenty of questions heading into Season 2.

A video shown on Capitol Hill on September 9 reportedly shows an American hellfire missile attacking and simply bouncing off a UAP (the military term for a UFO). When videos like this come out, ...