Astronomers confirm interstellar comet 3I/Atlas may be nearly 12 billion years old (australia) — The Guardian Australia
The Guardian Australia ·australia ·2 hours ago

Astronomers confirm interstellar comet 3I/Atlas may be nearly 12 billion years old

Astronomers announced on Monday that interstellar comet 3I/Atlas may be nearly 12 billion years old, potentially making it the oldest object observed in our solar system. Its unique elemental composition suggests it formed in extremely cold conditions, approximately -243C. Observations reveal this comet offers unprecedented insights into the origins of interstellar objects in our galaxy.

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Published 22 Jun 2026, 16:37 UTC · Updated 22 Jun 2026, 21:00 UTC

Summary by OZbrief Editorial. Original report: The Guardian Australia. Editorial policy · Corrections