From Borg battles to impossible moral choices, these are the 'Star Trek' episodes that define the hit sci-fi franchise.

Scientists have created an implantable artificial 'skin' that glows like a check engine light for the human body when it ...

Superman star Christopher Reeve once teamed up with the legendary John Carpenter for a underwhelming remake of a '60s sci-fi ...

A group of Australian scientists have revealed how we may be able to learn to speak with aliens, and the answer is found ...

Erich von Däniken, the Swiss author whose books on the extraterrestrial origins of ancient civilizations brought him both fame and scorn, has died at age 90. Von Däniken’s ...

In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars. The Perseverance rover, which has been exploring a dried-up lakebed for years, found ...

Eric and Wendy Schmidt are backing a start-up-like approach to building a giant space telescope and powerful ground ...