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

The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...

Astronomers have recently started looking for black holes bigger than galaxies. Brian Lacki explains how these “stupendously ...

A new SETI study argues that turbulent space weather around distant stars can smear out ultra‑narrow alien radio signals, ...

The pilots dubbed the fireballs “foo fighters” but had no idea what they were. Plasma? Enemy tech? Aliens? We still haven’t ...

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

Scientists in California have completed one of the first dedicated searches for signs of alien technology on 3I/ATLAS, the ...

A newly spotted interstellar visitor just got an unusually close listen from California scientists — in a search for signs of ...

An astrophysicist who searches for life in the Universe unpacks Steven Spielberg's UFO blockbuster Disclosure Day ...

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

“Are the current panels’ investigations a redux of the 1950s and ‘60s, where those panels were created to basically put this ...

The analyst said it is the “height of irresponsibility” to not have a policy in place to handle the ramifications of other ...