"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 ...

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

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

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?

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 ...

Artificial intelligence is starting to sit in for human subjects in classic economics games, from financial markets to public ...

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

Since Viking 1 landed in 1976, humans have studied Mars from afar, relying on rovers and orbiters to analyze the planet. But ...

In this scenario, our first contact with aliens would be tragic. We should look for "loud shouts in the night".