Are aliens real? The question has animated conspiracy theories for decades and enthralled at least one former president of ...

Planet K2-18b, an apparent water world 124 light years away, has been seen as a promising location in the search for aliens, ...

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

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

A viral Obama podcast answer about aliens prompted Trump to accuse him of revealing secrets and promise to release UFO files ...

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

The race to compile a sort of catalogue of the planets orbiting distant Suns is intensifying, with the upcoming Nancy Grace Roman Space Telescope, for instance, set to spot tens of thousands of such ...

If life exists elsewhere in the universe, researchers at the University of Washington are finding the clues on Earth to help ...

Human intelligence wasn’t a cosmic evolutionary fluke, some scientists say. The case against cosmic loneliness is growing.

"I saw no evidence during my presidency that extraterrestrials have made contact with us," Obama clarified on social media.

Scientists hunting for life beyond Earth have long thought that water is one of the key indicators. But a group of experts now says that looking for life on water–rich planets could be a waste of time ...