A once-in-a-lifetime cosmic treat for stargazers is on the celestial schedule this month, with two comets visible in the night sky through October 2025. Comet Lemmon and Comet SWAN were visible ...

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Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere. Both hail from the outer edges of our solar system — possibly what's known as the Oort ...

In October 2025, Comet Lemmon and Comet ATLAS may be visible as they streak across the night sky, providing a rare cosmic treat for skywatchers tonight, Wednesday, Oct. 22, amid the Orionid meteor ...

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

Two rare bright comets are visiting our neighborhood this month, making for once-in-a-lifetime viewing. The comets, C/2025 A6 (Lemmon) and C/2025 R2 (SWAN), are already showing off their green tails ...

Two greenish-hued comets are swinging through the inner solar system this fall, offering a rare chance to spot them in the coming weeks. The comets, named C/2025 A6 (Lemmon) and C/2025 R2 (SWAN), are ...

For those of you who like interesting night sky phenomena, there are actually two comets that are visible right now. Comet Lemmon and Comet SWAN were each discovered recently, so unlike, for instance, ...

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?

Halloween is upon us and the 2025 spooky season is abuzz with talk of three cosmic visitors — Comet Lemmon, Comet SWAN and the interstellar traveler 3I ATLAS — said to be haunting the night sky. But ...