In July 2025, astronomers spotted something remarkable passing through our Solar System, an object that had not come from ...

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

A strange interstellar comet discovered last year and speculated by a prominent astronomer to be an alien spacecraft could be older than our Solar System, according to a new study. The comet, first ...

It was initially thought to have formed between three and 10 billion years ago, but researchers have now found that it could be even older, originating from an ancient planetary system nearly 12 ...

One year ago, on July 1, 2025, astronomers discovered a fascinating new object moving through the solar system. Detected by the Asteroid Terrestrial-impact Last Alert System (ATLAS), the object was ...

A comet screaming in from another star system carried alien ice ratios never seen before. What scientists found inside its spinning nucleus is reshaping how we picture worlds beyond our sun.

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents preserved fragment of ancient planetary system ...

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

Interstellar comet 3I/ATLAS carries isotopic ratios entirely outside the Solar System range, ESO’s Very Large Telescope has ...

Scientists reveal comet 3I/ATLAS is up to 12 billion years old, offering insights into ancient planetary systems and cosmic conditions.

"Eventually, our own Voyager spacecraft will be extraterrestrial artifacts in other stellar systems." ...