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

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 ...

"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 ...

Some people look so unusual, it’s as if they don’t quite belong to Earth. Whether it’s their striking features, extraordinary proportions, or simply the way they carry themselves, they stand out in ...