This long-duration comet will make its closest approach to Earth this fall, before disappearing into the outer solar system for another 1,000 years.

Comets Lemmon and SWAN are making their closest approach to Earth in a rare cosmic treat. Can you see it in NJ? Here's timing, tips, more.

Get ready for a triple sky-spectacle of meteors, comets and auroras on Oct. 20 and Oct. 21, 2025. Here's how, when and where to see it all.

A pair of once-in-a-lifetime comets will rocket through our skies this October, and it's a rare treat because they won't be back for hundreds of years. The comets, C/2025 A6 (Lemmon) and C/2025 R2 (SWAN), look similar from our perspective.

After a year devoid of comets visible to the naked eye, two of the celestial entities — C/2025 A4 (Lemmon) and C/2025 R2 (SWAN) — will be gracing our skies at around the same time. Lemmon will reach its closest point to Earth on Tuesday, October 21st, wherein will come within about 56 million miles from Earth, according to Livescience.

Comet C/2025 A6 (Lemmon) is this year’s brightest comet visible from Earth—an icy relic from the solar system’s origins that won’t return until the next millennium.

Stu, a former videographer who lives in Perthshire, Scotland, says that a double-comet event happens ‘perhaps once or twice in a human lifetime’. To see two dazzling smears on the night sky is something of a ‘cosmic coincidence’, given that these dirty snowballs need to both reach the closest point to the Sun, the perihelion, he adds.

Skywatchers can catch a rare glimpse of Comet Lemmon this month, and it won't be back until around the year 3175. Here's how and when to spot the sparkly green comet.

Comet Lemmon is now visible with comet SWAN after sunset while also remaining visible before dawn for Northern Hemisphere skywatchers.