November 2025, the PUNCH satellite captured a dramatic sequence of the comet's tail twisting and reacting to powerful solar activity.

Discovered Jan. 3, 2025, by the 60-inch telescope at the Mount Lemmon Survey near Tucson, Arizona, Comet C/2025 A6 (Lemmon) put on a spectacular show this fall. Plus, the comet had a surprise for ...

Interstellar comet 3I/ATLAS will fly by our planet at a safe distance of 1.8 astronomical units (roughly 167 million miles or ...

Comet 3I/ATLAS was discovered on July 1, 2025, by the NASA-funded ATLAS telescope in Rio Hurtado, Chile and was quickly ...

SALT LAKE CITY — With October's Harvest Moon having passed us by, and November's Beaver Moon still a couple of weeks away, two new comets are peaking through the evening sky, giving stargazers ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Are you struggling to find the comets in the evening sky?

Two comets are converging in the night sky this month You can see an online livestream of the comets via the Virtual Telescope Project later this week The comets are called C/2025 A4 (Lemmon), and ...

Italian astronomers captured rare footage of Comet C/2025 K1 ATLAS tearing itself apart in real-time. The comet's October 8 solar pass vaporized subsurface ice, creating gas pressure that cracked the ...

The green comets visible in the night sky are now at their minimum distance from Earth, so they should be at their brightest in the night sky. Comet Lemmon (also called C/2025 A6) and Comet SWAN ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

Two comets, Lemmon and SWAN, are visible in the night sky through October 2025. Comet Lemmon will appear green and is best viewed in the northwest sky after sunset. Comet SWAN is dimmer and best ...

Comet C/2025 A6 (Lemmon), discovered on January 3, 2025, by the Mount Lemmon Survey, presented an extended period of visibility in Fall 2025. The comet unexpectedly continued to brighten for several ...