JWST mid-IR observations of interstellar comet 3I/ATLAS yield the first direct methane detection and confirm strongly enhanced CO2:H2O mixing ratios relative to solar system comets.
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3 Pith papers cite this work. Polarity classification is still indexing.
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astro-ph.EP 3years
2026 3verdicts
UNVERDICTED 3representative citing papers
Tianwen-1 provided the first out-of-plane imaging of 3I/ATLAS, indicating large dust grains (hundreds of micrometers) ejected at 3-10 m/s with steady-state outflow and a mass loss rate of about 1000 kg/s.
Post-perihelion optical spectroscopy of 3I/ATLAS reveals less C2 depletion than pre-perihelion, perihelion asymmetry in CN and metal production, metal release tied to CO rather than H2O, and residual [O I] emission indicating additional oxygen parents.
citing papers explorer
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The Volatile Inventory of 3I/ATLAS as seen with JWST/MIRI
JWST mid-IR observations of interstellar comet 3I/ATLAS yield the first direct methane detection and confirm strongly enhanced CO2:H2O mixing ratios relative to solar system comets.
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Interstellar Object 3I/ATLAS Observed from Mars by China's Tianwen-1 Spacecraft
Tianwen-1 provided the first out-of-plane imaging of 3I/ATLAS, indicating large dust grains (hundreds of micrometers) ejected at 3-10 m/s with steady-state outflow and a mass loss rate of about 1000 kg/s.
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Post-perihelion Coma Composition of the Interstellar Comet 3I/ATLAS from Optical Spectroscopy
Post-perihelion optical spectroscopy of 3I/ATLAS reveals less C2 depletion than pre-perihelion, perihelion asymmetry in CN and metal production, metal release tied to CO rather than H2O, and residual [O I] emission indicating additional oxygen parents.