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Observational Astronomy

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ALMA Finds Interstellar Comet 3I/ATLAS Strikingly Methanol‑Rich With Unusual Outgassing

Preprint analyses using ALMA with JWST indicate a cold, ancient origin as the fading visitor nears a brief pass by Jupiter.

Sun-Facing Tail in Interstellar Comet 3I/ATLAS Reveals Wobbling Jets, Suggesting 15.5-Hour Rotation

Interstellar Comet 3I/ATLAS Shows Signs of Global Ice Volcanoes, Study Finds

First Detection of Heavy Water in a Planet-Forming Disk Points to Prestellar Origins

ALMA Detects 17 Complex Organic Molecules in V883 Orionis Protoplanetary Disk