Have you seen the green comets yet? Two icy visitors from the edge of the solar system — Comet Lemmon (C/2025 A6) and Comet SWAN (C/2025 R2) — are the first comets visible in binoculars since Comet Tsuchinshan-ATLAS in October 2024. Both are visible after sunset on Wednesday, Oct. 22, 2025, from the Northern Hemisphere, remaining near their brightest in the night sky. It’s an especially good night to catch Comet Lemmon, which will sit just to the right of Izar in the constellation Boötes, above the orange star Arcturus. Comet SWAN glows directly below Altair, the uppermost star of the Summer Triangle.
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