Read, Watch or Listen

This year’s comet boom continues as Lemmon (C/2025 A6) is poised for naked-eye viewing around the new moon on October 21, when skies will be darkest. Discovered in January by the Mount Lemmon Survey, it’s already striking in the morning sky and should become an evening sight soon. The comet will pass about 56 million miles from Earth. Its orbital period is roughly 1,350 years, dropping to about 1,150 after November—meaning a next return no earlier than 3175. Brightness can be fickle, but astronomers say it’s performing well and could delight Northern Hemisphere observers over the coming weeks.

Prepared by Olivia Bennett and reviewed by editorial team.