SETI may have missed alien signals for 60 years because stellar plasma smears transmissions into noise, a new Astrophysical ...

WASHINGTON (AP) — A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White ...

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

Have you ever wondered what you would do if a) aliens were real and b) they decided to pay us a visit? How would we and our ...

Even at this early stage in our spacefaring age, humanity has already begun sending probes that will eventually reach other ...

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 ...

Pandora mission is designeed to "provide in-depth study of at least 20 known planets orbiting distant stars," according to NASA's Goddard Space Flight Center. Credit: NASA’s Goddard Space Flight ...

"Disclosure Day" director Steven Spielberg opens up to USA TODAY about aliens, AI and why he'll never quit making movies.