Equipping spacecraft with X-ray machines could boost safety for long-duration spaceflights—like a crewed mission to Mars ...

An extraterrestrial creature resembling a cephalopod, such as a squid, changed its skin color and moved its tentacles, ...

For instance, what if we really are being visited by aliens from other worlds and they turn out to be aggressive, violent, ...

K2-18b is one of the most promising worlds for the search for extraterrestrial life, so astronomers conducted an unusually ...

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

Why do we tend to assume that UFOs are crafts carrying alien beings rather than alien beings themselves? How the UFO ...

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