Large Telescope observations of interstellar comet 2I/Borisov has revealed that it is "one of the most pristine ever observed ...

Based on evidence collected by the James Webb Space Telescope, researchers have found that interstellar comet 3I/ATLAS could ...

Rather than being an alien craft, 3I/ATLAS likely formed 12 billion years ago at a key moment in the early Universe ...

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents ...

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

Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House ...

An interstellar comet that passed through the Solar System last year may be up to 12 billion years old – far older than the ...

When Comet 3I/ATLAS entered our solar system last year—only the third known interstellar object to do so—astronomers took notice. When astronomers first discovered 3I/ATLAS in July 2025, the icy ...

Copyright 2026 The Associated Press. All Rights Reserved. Copyright 2026 The Associated Press. All Rights Reserved. This image provided by NASA shows the interstellar ...

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

The SETI Institute is the latest to confirm what scientists have long suspected: the interstellar 3I/ATLAS comet is not an alien spaceship.

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar ...