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2 Green Comets Shine Bright. How to Spot Them in the Night Sky
Comet Lemmon and SWAN approach Earth with tails visible in binoculars; Lemmon shines at magnitude 5.1 and SWAN at 5.9, observatories report.
- On Oct. 9, 2025, Canadian astrophotographer Alan Dyer photographed Comet Lemmon as two bright green comets streamed through the Northern Hemisphere sky, requiring binoculars for clear views.
- Scientists explain Comet Lemmon, C/2025 A6, and Comet SWAN, C/2025 R2, originate in the Oort Cloud and appear green from gases streaming off their surfaces.
- Bob King suggests aiming the phone at the comet, tapping to focus, while David Dickinson advises using a tripod-mounted DSLR with a wide field of view to capture the green blob.
- This past week astronomers warned binoculars may reveal Comet SWAN through the end of the month, with its Monday flyby likely dimming it, while Comet Lemmon peaks Tuesday near sunrise.
- Sky surveys note spotting two comets simultaneously is rare but not unprecedented, Carson Fuls said, while Comet Lemmon sits low near the Canes Venatici constellation after sunset and past flybys include Neowise and Hale-Bopp.
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Associated Press News+27 Reposted by 27 other sources
2 green comets shine bright. How to spot them in the night sky
Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere. Both hail from the outer edges of our solar system.
·United States
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Coverage Details
Total News Sources29
Leaning Left5Leaning Right2Center18Last UpdatedBias Distribution72% Center
Bias Distribution
- 72% of the sources are Center
72% Center
L 20%
C 72%
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