Comet SWAN will make its closest approach to Earth — coming within 24 million miles of us — on October 20, while comet Lemmon ...

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 ...

Skywatchers are set for a rare cosmic spectacle this week as two green comets — Comet Lemmon and Comet SWAN, streak across the night sky, creating a dazzling display near some of the brightest stars.

Comet Lemmon will make its first appearance with comet SWAN after sunset while also remaining visible before dawn for ...

Comet Lemmon is now visible after sunset and before dawn for Northern Hemisphere skywatchers, with fainter Comet SWAN also in the post-sunset sky.