Based on evidence collected by the James Webb Space Telescope, researchers have found that interstellar comet 3I/ATLAS could be up to 12 billion years old!

Comets have played an interesting role in the history of astronomy. Since antiquity, many cultures saw them as omens or ...

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

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar System and is unlike anything ever before seen in our cosmic backyard, ...

A still-forming alien solar system has enough water in its outer reaches to fill Earth's oceans several thousand times over, a new study finds. The discovery marks the first time astronomers have ...

I do so love an ostentatious comet. As I wrote in a recent “The Universe” column, when these dusty ice balls are billions of kilometers from the sun, they’re frozen solid. But as they near our star on ...

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

Last year, an interstellar traveler entered our solar system. Some speculated that it was an alien spacecraft, but it turned ...

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

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