Two green comets will shine together — possibly to the naked eye — around Oct. 20-21 as the Orionid meteor shower peaks. However, if you want a preview, comets Lemmon (C/2025 A6) and SWAN (C/2025 R2) are now visible from the Northern Hemisphere in binoculars or a small telescope. Here’s how to find them on Friday, Oct. 10, 2025.
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