JWST Data on Interstellar Comet 3I/ATLAS Points to Ancient, Cold Formation

AI-generated NewsSnap summary based on source reporting.
Published: 2026-06-25
Category: science
Source: Orbital Today
Original source

New observations from the James Webb Space Telescope of interstellar comet 3I/ATLAS reveal unusual isotopic ratios, specifically high deuterium and low carbon-13. These findings suggest the comet originated in an extremely cold region of the galaxy, potentially 10 to 12 billion years ago, providing insights into early galactic conditions.

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