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

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

Data from the James Webb Space Telescope on exoplanet K2-18b has revealed the "strongest hints yet of biological activity ...

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

This new group, which is led by Harvard professor Avi Loeb, aims to advise the Trump administration and the U.S. intelligence ...

On this episode, Mark and the crew are back at Grand Cayman Island… and on this adventure they're going night diving to ...

While telescopes like the James Webb Space Telescope (JWST) can detect the chemical fingerprints of distant atmospheres, ...

SETI scientists searched the interstellar object 3I/ATLAS for radio signals that could indicate extraterrestrial technology ...

Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...

Disclosure Day treats extraterrestrial life as a challenge to faith. It’s not.

An interstellar comet that blazed past the sun last year could be nearly three times older than our solar system and is ...