SIGNS of an alien planet that’s about the same size as Earth have been picked by up a Nasa telescope. Scientists say it might ...

When astronomers announced Kepler-452b, they were not just adding another distant world to a growing catalog. They were ...

Astrobiologists propose that alien civilizations need accessible coal deposits to industrialize exoplanets and become detectable from Earth.

Life on Earth may exist thanks to an incredible stroke of luck — a chemical sweet spot that most planets miss during their formation but ours managed to hit.

"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 ...