Astronomer Avi Loeb gives his thoughts on the prospect of finding signs of intelligent life beyond our Solar System.

A provocative study suggests that Jupiter’s frozen moon Europa may not only be hospitable, but that life from Earth could be ...

Steven Spielberg's claims that aliens have already visited Earth have drawn a mixed but pointed scientists' reaction this week, with astrophysicists in the UK and Australia stressing that while ...

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

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

Study pinpoints which rocky worlds could hang on to a life-supporting atmosphere ...

Research indicates airport radar systems may unintentionally broadcast Earth's presence to aliens up to 200 lightyears away, ...

Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House ...

Loeb's team will report to a new White House panel focused on UFOs, now often referred to as unidentified anomalous phenomena ...

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

Octopuses, bees, and dogs all process information differently. Even within the narrow confines of one planet, evolution produced a wide range of nervous systems rather than a single design. A new ...

Researchers propose turning a future NASA moon base into a quarantine station that would screen space samples before they ever reach Earth.