Interstellar comet 3I/Atlas may be twice as old as the Solar System

Isotopic analysis of comet 3I/Atlas suggests it originated 11-12 billion years ago.

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The fact

Born before the Solar System, it likely comes from a period of intense star formation in the Milky Way.

This discovery sheds light on the birth conditions of interstellar objects.

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Auto-synthesis from 1 media source · identified on August 27, 2026