The objects could be rocky fragments, structures formed during interstellar travel, or something entirely different.

To catch the Geminids peak, look to the eastern sky all evening on Dec. 13 and Dec. 14. The meteors will appear near the ...

Interstellar comet 3I/ATLAS, only the third ever seen, returns with unique composition; experts eye 19 December 2025 as a date that could reshape comet science.

Key Findings Avi Loeb is demanding transparency from NASA. Congress wants answers before the December 19 close approach. And ...

When Comet Hale-Bopp blazed across the 1997 sky, it marked one of the most intensively observed celestial events of the 20th ...

December is the month that fans of 3I/ATLAS have been waiting for as the interstellar comet makes its closest approach to ...

The yet-to-be-peer-reviewed findings indicate that comet 3I/ATLAS shares similarities with the icy trans-Neptunian objects — ...

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

To catch the Geminids peak, look to the eastern sky all evening on Dec. 13 and Dec. 14. The meteors will appear near the bright planet Jupiter. With the darkest possible skies, you could see up to 120 ...

December is an exciting month for those who like to look up, with a comet, a meteor shower, and a conjunction between the ...

Astronomers found signs that mysterious interstellar object 3I/ATLAS is radiating a "heartbeat" pulse of light that repeats ...