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

Interstellar Comet 3I/ATLAS was the third visitor from outside our system, and its origins were being studied using an interstellar visitor model.

A newly discovered object from deep space may be the oldest comet ever observed—possibly more than 7 billion years old, and ...

A recently discovered interstellar object, 3I/ATLAS, could potentially be the oldest comet ever observed, predating our solar ...

Discover 3I/ATLAS, an interstellar comet with a reddish hue, rich in water ice, and possibly predating the solar system.