A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

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

A strange interstellar comet discovered last year and speculated by a prominent astronomer to be an alien spacecraft could be ...

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

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

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

Alien probes could already be hiding somewhere in our Solar System – and our current surveys are nowhere near good enough to rule them out, according to a NASA‑linked study presented this month by ...

CAPE CANAVERAL, Fla. (AP) — The group leading the charge in the search for extraterrestrial life has given the all clear: An interstellar comet looks to be completely natural and free of any alien ...

Breakthrough Listen will scan the the skies with the aid of the MeerKAT Telescope. They are targeting a million nearby stars. [NASA's Planet-Hunting Probe Joins the Search for Intelligent Aliens] ...

It may not breathe, eat, or sleep. It may not reproduce in any ordinary sense. It may not have a face, a voice, or a body shaped by evolution. It may be a machine. This is not a wild idea – it follows ...

This voice experience is generated by AI. Learn more. This voice experience is generated by AI. Learn more. An artist's impression of a theoretical planet orbiting a redder star, which could cause ...