A Season to Remember
Taken together, this sequence gives us three comets in a row:
September:Â 3I/ATLAS before it disappears
October:Â C/2025 A6 (Lemmon) at its brightest
November:Â C/2025 K1 (ATLAS) for a post-perihelion check
For northern observers, this really is an autumn of comets, with back-to-back opportunities to observe these ethereal objects from deep space. But our southern hemisphere friends needn’t feel left out: November brings 3I/ATLAS back in their favor, and the global Unistellar community ensures that every observer’s contribution matters.
Stay tuned as we share images, light curves, and stories from across the network. With three comets on the calendar, this season is shaping up to be one of the most exciting periods for comet hunters in recent memory.
You can learn more about each of these missions on our Cometary Activity Missions page, and review how to make science observations with our Tutorial. Clear skies!
This article was originally published at science.unistellar.com