3I/ATLAS: A 10-Billion-Year-Old Interstellar Visitor as a Chemical Time Capsule for Planet Formation

To the point

3I/ATLAS is an ancient interstellar comet that crossed the Solar System on a hyperbolic trajectory, has unusual chemistry revealing planetary formation in distant regions of the Milky Way, and acts as a chemical time capsule indicating that many more such visitors may arrive with future telescopes.

Science News: Interstellar Comet 3I ATLAS Shocks Scientists
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Science News: Interstellar Comet 3I ATLAS Shocks Scientists

Science News: A mysterious interstellar comet older than the Sun is exposing alien chemistry and rewriting astronomy as we know it.