Comet C/2025 A6 Lemmon & Aurora Borealis: View from Alaska

Comet C/2025 A6 Lemmon & Aurora Borealis: View from Alaska

Astrophotographer Todd Salat: "Comet Lemmon rises through the aurora glow in the northeast from Trapper Creek, Alaska, a little after 6 am on October 21, 2025. During today’s closest approach to Earth, the comet is star trekking through the constellation Boötes 'The Herdsman,' which includes Arcturus, the bright star near the bottom of this image."

Comet Lemmon is brightening and moving into morning northern skies as it enters the inner solar system where the Sun increasingly makes its ion tail highly active. Besides Comet SWAN25B and Comet ATLAS, Comet C/2025 A6 (Lemmon) is now the third comet currently visible with binoculars and on long camera exposures. Comet Lemmon was discovered early this year. Comet Lemmon will round the Sun on November 8, 2025. It passed nearest to the Earth—about half of the Earth-Sun distance—on October 21.

Earth auroras have different names depending on the pole they occur at. Aurora Borealis, or the northern lights, is the name given to auroras around the north pole and Aurora Australis, or the southern lights, is the name given for auroras around the south pole.

Image Credit: Todd Salat 

Location: Trapper Creek, Alaska

Todd's website: https://www.aurorahunter.com

Image Date: Oct. 21, 2025

#NASA #Astronomy #Space #Science #Earth #Aurora #AuroraBorealis #Comets #CometC2025A6Lemmon #Coma #CometaryTails #SolarSystem #MilkyWayGalaxy #Cosmos #Universe #Astrophotography #ToddSalat #Astrophotographers #TrapperCreek #Alaska #UnitedStates #STEM #Education