However, new research has shown this potentially "water ice-rich" visitor could be even more extraordinary than initially ...

The European Southern Observatory has captured the clearest images yet of the interstellar visitor 3I/ATLAS as it moves inward through the solar system.

A mystery interstellar object discovered last week is likely to be the oldest comet ever seen—possibly predating our solar ...

3I/ATLAS, also known as C/2025 N1, is a comet from interstellar space, meaning it originated in another star system and entered our solar system on a one-time flyby. It was first spotted by the ATLAS ...