How big would a telescope need to be to see Earth’s dinosaurs from 66 million light-years away? Think big—and then think ...

Alien and Predator are iconic sci-fi horror franchises that have inspired many must-play games.

For more than six decades, astronomers have listened for possible signals from extraterrestrial civilisations, with no confirmed detection to date. A .

Disclosing government documents about UFOs won't mean much without hard physical evidence for alien spaceships or alien bodies.

For decades, scientists have searched the skies for signs of extraterrestrial technology. A study from EPFL asks a sharp ...

Documents might help scientists shed light on unexplained phenomena and government secrets, experts said.

Mars presents one of the strangest sights in the solar system: a blue-tinted Sun setting against a red sky. This episode explains the physics behind this eerie phenomenon, from fine dust particles to ...

President's quick-fire-round answer has led to a flurry of comments.

I could be the best pathologist on planet earth—the undisputed Sherlock Holmes of medical science, even—and I still wouldn’t have the slightest clue what the cause of death is for this particular ...

A new paper suggests that BARSOOM may have been alive on the planet, and was killed in the Viking experiments.

Human activity brings with it alien species and creates excellent conditions that allow them to become established in an otherwise barren Arctic landscape. (Kristine Bakke Westergaard, NTNU via SWNS) ...