Two green comets will reach their minimum distance from Earth, likely peaking in brightness, after sunset on Monday, Oct. 20, just hours before the peak of the annual Orionid meteor shower, itself the product of the famous Halley’s comet. Comet Lemmon (also called C/2025 A6) and Comet SWAN (C/2025 R2) get closest to Earth early this week at 55 and 24 million miles from Earth, respectively, and could be visible to the naked eye. Ditto the 20-or-so “shooting stars” from the meteor shower. The rare sky show will unfold under a new moon, ensuring dark skies worldwide.
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