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 ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

"Alien: Earth" follows a group of soldiers as a ship carrying a Xenomorph crash-lands on Earth. The FX TV series is set in the same universe as the "Alien" movies. Here's when "Alien: Earth" takes ...

The mysterious 3I/ATLAS comet is hurtling towards Earth and is set to make its closest approach on Friday, December 19, with ...