"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 ...

President Donald Trump has been fully briefed on America's secret UFO programs and the existence of multiple alien races here on Earth. At least that is ...

Following speculation that comets could have been alien spacecrafts, more and more experts in the field are convinced that ...

The series is hilarious, which makes it a little unusual in the sci-fi space. It was a standout for how it deals with the ...

Pocock, a space scientist at University College London and BBC presenter, predicts alien life will be found by 2075 but ...

Alien vs Captain America #2 hits stores Wednesday. Cap and the Commandos face HYDRA's xenomorphs while Red Skull plays mad scientist. What could go wrong?

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

There's the invasion by a warlike species, there's the highly evolved species trying to communicate with our primitive ...

3I/ATLAS came within 168 million miles of Earth around midnight CST Friday. While that might seem pretty far away, the ...

The first signals from extraterrestrial civilisations, according to David Kipping's Eschatian Hypothesis, are likely to be ...

NASA has confirmed that 31/ATLAS is a comet and not an alien spacecraft, as some had believed. But it did lead one scientist to map out what could happen if we one day encounter aliens ...