A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's ...

I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches ...

Is an interstellar comet actually an alien spaceship? A researcher traces how influencers spread such speculation via social ...

Discovered on July 1 by the NASA-funded ATLAS telescope in Chile, 3I/ATLAS is only the third confirmed visitor from another ...

A small, icy visitor from beyond the solar system is giving scientists an unusually close look at the chemistry that may help ...

The comet 3I/ATLAS is taking a long holiday journey this year. It’s visiting from another solar system altogether. Those ...

Comet Lemmon was discovered in January 2025 and made its closest approach to Earth in late October 2025. But by November 2025 ...

NASA’s Hubble Telescope photographed the comet on November 30. At that time, the comet was still very far — about 178 million ...

New images taken by the Hubble Space Telescope and a Jupiter-bound mission showcase interstellar comet 3I/ATLAS ahead of its ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. You’ve likely already heard about two comets visible from ...

We are in Germany and it's winter, so we can confidently assume that it is cold, with possible snow covering the fields and ...

Then there was the September discovery of C/2025 R2 (SWAN), a comet so bright that even when it was near the moon on ...