A rare comet from another star system is revealing just how different alien solar systems may be from our own.

A comet from beyond our solar system is carrying water so chemically unusual that scientists say it could only have formed ...

New analysis of ALMA observations of interstellar comet 3I/ATLAS show its water carries a chemical signature pointing to a ...

A mysterious comet from beyond our solar system is giving astronomers a rare glimpse into alien worlds — and it may have ...

3I/ATLAS is not just another comet drifting by. This object likely formed around another star, may be older than our Sun, and ...

ALMA reveals unusual “alien” water in interstellar comet 3I/ATLAS, showing it formed in an extremely cold, distant star ...

This artist’s impression compares the semi-heavy water content of the interstellar comet 3I/ATLAS (left) and Earth (right).

Measurements of this interstellar comet’s molecular makeup show an excess of heavy water molecules that is dramatically different from anything known to have ever formed around our sun ...

When interstellar comet 3I/ATLAS swept past the Sun in late 2025, something about it had quietly shifted. Researchers trained a powerful telescope on its glowing gas cloud weeks later and found a ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Space scientists have released a new image of the enigmatic space rock that traveled through our solar system. Researchers revealed the photograph shows the interstellar Comet 3I/ATLAS - speculated to ...