Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Project Hail Mary, Solaris, and The Hitchhiker's Guide to the Galaxy are all among the very best sci-fi books set in space.

Before his death, Stephen Hawking consistently warned humanity against contacting aliens. As interest in UFOs and little ...

You are driving alone through a quiet countryside road at dusk when something strange appears in the sky. A sudden white ...

For your extraterrestrial viewing needs, Stacker ranked the top 30 alien movies, according to their IMDb user rating.

Many American adults experience weekly nightmares and claim to have been abducted by an “alien.” ...

Having considered more than 1,000 cases, this analyst of unidentified anomalous phenomena has honed a rational process for ...

This new group, which is led by Harvard professor Avi Loeb, aims to advise the Trump administration and the U.S. intelligence ...

Speaking for the first time since a chilling experience four decades ago, Paul Jones and his mum Daphne reveal how their trip ...