A stunning new image of interstellar comet 3I/ATLAS (C/2025 N1 ATLAS) reveals the cosmic visitor's ion tail has grown ...

Interstellar invader Comet 3I/ATLAS is still full of surprises — an unexpected brightening has scientists baffled ...

A new study has an explanation for the unusual chemical makeup of our interstellar visitor. If true, it's not the best news we've ever heard.

The building blocks of life may be much more common than we previously thought. Observations of a comet coming from outside our solar system show a massive trail of water that suggests Earth may not ...

Astronomers at the MeerKAT radio telescope in South Africa have reported the first radio detection from interstellar object ...

Comet 3I/ATLAS is one of only three interstellar objects ever detected in our solar system. Scientists are working to determine the comet's size and physical characteristics as it passes through our ...

Comet 3I/Atlas is soon going to be closest to the Sun in its journey through our solar system. Here are five facts that shed ...

CAPE CANAVERAL, Fla. (AP) — A comet from another star system will swing by Mars on Friday as a fleet of spacecraft trains its sights on the interstellar visitor. The comet known as 3I/Atlas will ...

From the orbit of Mars, China's Tianwen-1 sent back new and intriguing images of our interstellar visitor. An animation shows ...

Indian scientists claim AstroSat spotted interstellar comet 3I/ATLAS before NASA — sparking debate over data-sharing, ...