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A pair of once-in-a-lifetime comets are rocketing through our skies right now, and it’s a rare treat because they won’t be back for hundreds of years. The comets, C/2025 A6 (Lemmon) and C/2025 R2 (SWAN), look similar. Both comets have already had their brightest nights on Oct. 20 and Oct. 21. But if you’re out and about this final week of October, you can still spot these green gaseous globes and their streaming tails.
You’ll be able to see Lemmon without any equipment, but SWAN will be pretty faint,…
