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Scientists now say the 3I/ATLAS interstellar comet discovered earlier this month could be one of the oldest that astronomers have ever encountered and some 3 billion years older than our solar system.

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 ...

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The new interstellar comet's official name is 3I/ATLAS. It's officially the third known interstellar object to pass through our solar system, and it poses no threat to Earth.

Astronomers are tracking a newly spotted comet hailing from parts unknown, only the third time such an interstellar object has been observed visiting our solar system.

NASA discovered the third interstellar comet through a survey telescope in Rio Hurtado,Chile on Monday.