A newly discovered comet, 3I/ATLAS, may be the most ancient visitor ever detected, potentially older than our solar system itself. Unlike previous interstellar objects, this ice-rich comet seems to ...

French astronomer Jean-Louis Pons made his first comet discovery, c/1801 N1. When he'd began his career in 1789 as a ...

The object is big – possibly as wide 12 miles, larger than the asteroid that wiped out the dinosaurs – and is speeding ...

A mystery interstellar object spotted last week by astronomers could be the oldest comet ever seen, according to scientists.