James Webb Space Telescope Reveals Unusual Ice Composition in Interstellar Comet 3I/ATLAS

AI-generated NewsSnap summary based on source reporting.
Published: 2026-11-01
Category: science
Source: Mashable

Astronomers using NASA's James Webb Space Telescope have observed an unusual composition in the ice of interstellar comet 3I/ATLAS. Unlike typical comets in our solar system, 3I/ATLAS showed only faint traces of two specific water ice signatures, suggesting that tiny ice bits are blended with more dust. This finding, published in The Astrophysical Journal Letters, indicates that when placed alongside distant icy worlds in our own solar system, the interstellar comet's ice no longer appears out of place.

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