Astronomers have revised the mass of nearby exoplanet GJ 3378 b, recasting it as a rocky super‑Earth in the habitable zone ...

A recently discovered "super Earth" located around 25 light-years from our planet is not as massive as previously thought, ...

An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.

NASA plans to launch the Habitable Worlds Observatory in the 2040s, a mission whose goal is “to image Earth-like planets ...

New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth could thus be overlooking prime evidence of alien intelligence.

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

When a scientific controversy or breakthrough dominates headlines, press officers and journalists often quote a handful of expertS ...

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 ...

What are the processes necessary to do so? Can life travel from one planet to another? If so, how? Today's technology brings ...

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

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

LOS ANGELES (AP) — In “Disclosure Day,” out Friday, Steven Spielberg is once again inviting audiences to ponder the existence of extraterrestrial life — and the implications it would have for religion ...