Comet C/2025 A6 (Lemmon) is approaching Earth — will it become visible to the naked eye? The comet will come closest to Earth on Oct. 20. There's hope that it may become bright enough to glimpse with the naked eye. Astrobitica September 8, 2025 (Last updated: September 8, 2025) 1 minute read The comet will come closest to Earth on Oct. 20. There’s hope that it may become bright enough to glimpse with the naked eye. About the Author Astrobitica Administrator Visit Website View All Posts Post navigation Previous: Safety, progress, and the need for Artemis 2.0Next: Commercial firms team up to demonstrate hypersonic vehicle tracking capabilities