3I/Atlas was spotted on July 1 by the NASA-funded ATLAS survey telescope in Río Hurtado, Chile, when it was 420million miles ...

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 ...

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.