When interstellar object 3I/ATLAS was scanned for alien technology, scientists ran the most sensitive search ever attempted.

A comet from another star system is sweeping through our cosmic backyard and, for the first time, astronomers have picked up ...

Harvard's Avi Loeb argues 3I/ATLAS shows signs of alien technology, from its 0.2% probability flight path to bizarre metal ...

With 3I/ATLAS streaking away from our planet, speculation remains as to whether the interstellar comet is alien or not.

Even by the strange standards of interstellar visitors, 3I/ATLAS is turning into a real cosmic outlier. Discovered on July 1, ...

Learn about the 3I/ATLAS mystery as Harvard's Avi Loeb reveals 'wobbling jets' that could suggest the interstellar visitor is ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

The research is mounting up that we might not be alone in this big wide world. So what's the likelihood that aliens are out ...

In 1938, a German ship set out on an expedition to Antarctica under the utmost secrecy—allegedly to establish a Nazi fortress ...

Vine Gilligan's sci-fi series Pluribus still has many mysteries left to be solved, and fans have come up with some intriguing ...

Scientists have sought out and detected radio emissions from from interstellar comet 3I/ATLAS, confirming what most ...

A Harvard University astrophysicist has sparked a furious debate by warning he cannot rule out that extraterrestrials are paying us a visit.