From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

Aliens might be transmitting communications signals to each other across exoplanets, some astronomers think. Since these signals are likely sent as narrowband radio waves, we may now have a way to ...

One of Britain’s most prominent space scientists believes humanity may finally get an answer to one of its oldest questions ...

In her new book "First Contact," journalist Becky Ferreira explores the scientific search for alien life, our cultural obsessions with extraterrestrials and why the truth may be more human than we ...

I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...

The Dead Space series is one of the biggest names in sci-fi horror, successfully blending a creepy, awful atmosphere with setpieces of relentless, grisly action. In the movie world, the Alien ...

We blasted off with Elio — and met an adorable alien named Glordon along the way. (Illustration composite: Annelise Capossela; illustrations: Walt Disney Studios/courtesy of Everett Collection) Space ...