US Edition2 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.
37 Articles
37 Articles
2 Green Comets Are Visible 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—possibly what's known as the Oort Cloud, well beyond Pluto, the AP reports. Comet Lemmon will have its closest brush with Earth...
How to see an incoming comet over PNW skies
PORTLAND, Ore. (KOIN) -- Comet Lemmon is nearing its closest approach to Earth next week and could be visible to some with the naked eye. The comet is expected to be at its best visibility on October 21. According to Jim Todd, OMSI Director of Space Science Education, the comet is expected to be visible low in the northwestern sky nearly 90 minutes after sunset. As all astronomical events go, the view of Comet Lemmon will be dependent on the Pac…
Associated Press News
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.
The night sky in the Northern Hemisphere offers an unusual spectacle: two green comets are visible simultaneously without a telescope. These are comets Lemmon and SWAN, both originating from the outer reaches of the solar system, possibly from the mysterious Oort Cloud, located far beyond Pluto. When can we see these two green comets? Comet Lemmon will be at its closest approach to Earth this month, while Comet SWAN will pass close to the planet…
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