Science ❯ Astronomy ❯ Comets

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ATLAS ATLAS Telescope NASA IMCCE Observation Techniques ALMA Telescope Minor Planet Center PanSTARRS ATLAS Project Mount Lemmon Observatory Comet Lemmon Tsuchinshan Observatory Comet SWAN 2025 ATLAS System SWAN25B Observations Mount Lemmon Survey Public Engagement Amateur Astronomy 3I/ATLAS

Comets Lemmon and SWAN Poised for Best Viewing Oct. 20–21

A new moon near the Orionid peak creates favorable, short nightly windows for binocular viewing.

New Comet SWAN25B Emerges Bright Near the Sun as Orbit Remains Uncertain

Oort Cloud’s Largest Known Comet Unleashes High-Speed Carbon Monoxide Jets