How to see Comet C/2025 R2 (SWAN) shine in the October sky Comet C/2025 R2 (SWAN) will make a close flyby of Earth on Oct. 21. Astrobitica October 17, 2025 (Last updated: October 17, 2025) 1 minute read Comet C/2025 R2 (SWAN) will make a close flyby of Earth on Oct. 21. About the Author Astrobitica Administrator Visit Website View All Posts Post navigation Previous: Orion spacecraft arrives at VAB ahead of stacking for Artemis 2Next: With 41% off, Celestron’s lightweight and versatile TrailSeeker 8×42 binoculars are an absolute bargain in this deal