Two comets are becoming visible in the night sky this week, with experts predicting they will become even brighter next week during the peak of the Orionid meteor shower. The brightest is Comet Lemmon — also called C/2025 A6 (Lemmon) — which is now making a play for the title of “comet of the year,” as it shines in the northwest beneath the Big Dipper after sunset on Wednesday, Oct. 15, 2025. However, it’s not the only green comet now visible in binoculars for Northern Hemisphere observers, with Comet SWAN (C/2025 R2) also on the cusp of visibility in the southwest after dark. Both comets are likely to brighten as they reach their closest to Earth around Oct. 20-21.
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