Hollywood makes initiating alien contact seem much easier than it has proven to be. In E.T. the Extraterrestrial, E.T. got ...

Thousands of people have reported UFOs or alien encounters in Northern California. That number could soon go up.

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

Get the latest federal technology news delivered to your inbox. You might think this column is about UFOs and the Pentagon's ...

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

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

A Soviet astronomer in the 1960s proposed a scale to classify hypothetical alien civilizations. Here’s why the framework is ...

California-based company Auxilium Biotechnologies just produced kidney and liver tissue in space for the first time, using a ...

A space thruster using superconducting magnets completed its first orbital tests and could someday propel spacecraft using ...