Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion ...

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

Scientists reveal comet 3I/ATLAS is up to 12 billion years old, offering insights into ancient planetary systems and cosmic ...

A team combined compositional data of primitive bodies like Kuiper Belt objects, asteroids and comets with new solar data sets to develop a revised solar composition that potentially reconciles ...

Astronomers studying the intriguing comet 3I/ATLAS on Monday said that this visitor is incredibly ancient, potentially nearly ...