🔬 Science Sep 8, 2026 · Stuart Clark

3I/ATLAS was born in the deep freeze

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3I/ATLAS was born in the deep freeze
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This figure illustrates the different distributions of dust (blue), gas (green) and ions (red) in 3I/Atlas.Credit: Lea Ferellec (CC BY 4.0)
The more astronomers learn about interstellar comet 3I/ATLAS, the colder its birthplace appears to have been.
New observations made with the William Herschel Telescope (WHT) on La Palma in the Canary Islands have revealed unusually large quantities of nitrogen in the comet’s gasseous plasma tail. The result suggests that 3I/ATLAS formed at temperatures below

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