JWST observations indicate that interstellar comet 3I/ATLAS has dust dominated by amorphous silicates similar to the ISM, unlike the crystalline silicate-rich dust in Solar System comets.
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9 Pith papers cite this work, alongside 588 external citations. Polarity classification is still indexing.
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New HST observations of P/2023 V6 (PANSTARRS) document its transition to dormancy and yield a diameter estimate of approximately 340 meters.
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.
Multi-band photometry and Monte Carlo modeling of interstellar comet 3I/ATLAS yield a dust size distribution with power-law index -3.5 and a phase curve showing opposition surge of 0.1-0.4 mag distinct from Solar System comets.
New Gemini and JWST data show 450P/LONEOS has a 1.8 km nucleus, CO2 gas production of ~7e24 molec/s, water ice absorption, and activity consistent with CO2 release from crystallizing amorphous ice.
Post-perihelion UVES spectra of interstellar comet 3I/ATLAS reveal elevated NiI and FeI production explained by direct sublimation of Ni(CO)4 and Fe(CO)5 from subsurface layers, with a transient heat source accounting for the pre-perihelion Ni excess.
New NIR and optical spectra of the outbursting comet 12P/Pons-Brooks detect crystalline water ice at 140-170 K and gas ratios indicating typical C3 but depleted C2, with outburst kinetic energy of ~8e3 J/kg supporting amorphous ice crystallization as the trigger and a refractory-to-ice mass ratio of
Rubin Observatory delivers the earliest large-telescope astrometry and grizy photometry of interstellar comet 3I/ATLAS, including colors and a dust-to-nucleus cross-section ratio lower limit.
Spectroscopic observations of disintegrating comet C/2019 Y4 (ATLAS) classify it as a typical Oort cloud comet with less dust, where porous dust accounts for its slightly red reflectivity gradient of ~5% per 1000 Å.
citing papers explorer
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The Dust Mineralogy of Interstellar Comet 3I/ATLAS from JWST/MIRI Observations
JWST observations indicate that interstellar comet 3I/ATLAS has dust dominated by amorphous silicates similar to the ISM, unlike the crystalline silicate-rich dust in Solar System comets.
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Dust On, Dust Off: HST Observations of the Newly Dormant Jupiter Co-orbital Comet P/2023 V6 (PANSTARRS)
New HST observations of P/2023 V6 (PANSTARRS) document its transition to dormancy and yield a diameter estimate of approximately 340 meters.
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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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Dust colour, phase behaviour, and Monte Carlo modelling of interstellar comet 3I/ATLAS from 4 au pre- to 4 au post-perihelion
Multi-band photometry and Monte Carlo modeling of interstellar comet 3I/ATLAS yield a dust size distribution with power-law index -3.5 and a phase curve showing opposition surge of 0.1-0.4 mag distinct from Solar System comets.
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JWST and Gemini Observations of the Active Centaur 450P/LONEOS: Nucleus and Coma Characterizations
New Gemini and JWST data show 450P/LONEOS has a 1.8 km nucleus, CO2 gas production of ~7e24 molec/s, water ice absorption, and activity consistent with CO2 release from crystallizing amorphous ice.
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Origin and evolution of NiI and FeI in the coma of the interstellar comet 3I/ATLAS throughout its trajectory
Post-perihelion UVES spectra of interstellar comet 3I/ATLAS reveal elevated NiI and FeI production explained by direct sublimation of Ni(CO)4 and Fe(CO)5 from subsurface layers, with a transient heat source accounting for the pre-perihelion Ni excess.
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Optical and Near-Infrared Spectroscopy of the Outbursting Comet 12P/Pons-Brooks
New NIR and optical spectra of the outbursting comet 12P/Pons-Brooks detect crystalline water ice at 140-170 K and gas ratios indicating typical C3 but depleted C2, with outburst kinetic energy of ~8e3 J/kg supporting amorphous ice crystallization as the trigger and a refractory-to-ice mass ratio of
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NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1)
Rubin Observatory delivers the earliest large-telescope astrometry and grizy photometry of interstellar comet 3I/ATLAS, including colors and a dust-to-nucleus cross-section ratio lower limit.
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Dust and Volatiles in the Disintegrating Comet C/2019 Y4 (ATLAS)
Spectroscopic observations of disintegrating comet C/2019 Y4 (ATLAS) classify it as a typical Oort cloud comet with less dust, where porous dust accounts for its slightly red reflectivity gradient of ~5% per 1000 Å.