Report
Webb Telescope Reveals Dust-Rich Water Ice in Interstellar Comet 3I/ATLAS
NASA/ESA/CSA's James Webb Space Telescope analyzed the third confirmed interstellar comet, finding water ice mixed with dark rocky material. High deuterium levels suggest formation in extremely cold conditions ~10–12 billion years ago in a metal-poor environment, unlike Solar System comets.
TLDR
Interstellar objects are rare; this direct sample of exoplanetary system chemistry from billions of years ago offers insights into galactic history, comet formation, and the prevalence of life's building blocks elsewhere. The comet's preserved ices record conditions from an early galactic planetary system, helping determine how common or rare our Solar System's chemistry is.
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