A new exoplanet model screens rocky worlds by their ability to retain atmospheres over geologic timescales, helping narrow ...

Scientists are raising concerns that we may be overlooking evidence of extraterrestrial life even when it is present. Hidden ...

New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth ...

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

Scientists may have just taken one of the biggest steps yet in the search for life beyond Earth. Meet K2 18 b, a distant ...

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

Somewhere out there, a planet roughly the size of Earth may be orbiting a distant star in conditions that could support life.

Scientists say moons around rogue planets wandering through the galaxy could remain warm enough for life thanks to tidal heating and hydrogen-rich atmospheres. These dark, starless worlds may have had ...

In “Disclosure Day,” in theaters now, Steven Spielberg is once again inviting audiences to ponder the existence of extraterrestrial life — and the implications it would have for religion ...

Disclosure Day had people talking for its fresh take on alien contact and powerful sci-fi themes. These films follow the same ...

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the Trump administration to ...