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

Feature | A lot has happened to Amanda Ripley since the first Alien Isolation ...

Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

A planet with one side permanently roasting and the other frozen in endless darkness might still have a chance of supporting life. Researchers found that heat inside a tidally locked exoplanet could ...

Thus far, our search for extraterrestrial life points toward Clarke’s former point, suggesting that our little blue dot is ...

Whether you like it or not, these first-person shooters are going to make you play as the villain. Embrace it; sometimes ...

Harvard astrophysicist Avi Loeb has floated the provocative idea that humans might themselves be alien‑made 'autonomous probes,' built through advanced synthetic biology rather than evolving entirely ...

A team of remote viewers and sky watchers take to Mount Adams to perform an intricate experiment, in this clip from Season 18, "Ancient Aliens On Location: The UFO Investigations." Did Trump say his ...

NASA’s Viking 1 lander set down in the Chryse Planitia region of Mars. Its identical twin, Viking 2, followed on Sept. 3 of ...

There is an age-old question that humans have been asking forever: What happens when we die? The beautiful (and sometimes ...