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Heavy hydrogen in 3I/ATLAS's methane points to a frigid birthplace

Astronomy

Read it at Phys.org

The interstellar comet 3I/ATLAS carries a chemical clue to conditions in the planetary system of its origin, locked away long before it reached our sun. Its methane signature is unusually rich in heavy hydrogen, suggesting that…

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(3 h ago)
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Phys.org
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Science
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Headline and 36-word snippet. The full article is at the source.

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A laser optics experiment