What time will interstellar comet 3I/ATLAS be closest to Earth tonight? NASA JPL pinpoints the moment the interstellar visitor passes closest to our planet. Astrobitica December 18, 2025 (Last updated: December 18, 2025) 1 minute read NASA JPL pinpoints the moment the interstellar visitor passes closest to our planet. About the Author Astrobitica Administrator Visit Website View All Posts Post navigation Previous: Which is the best star projector for under $50 this Christmas?Next: Night sky tonight: See the Orion Nebula shine after dark on Dec. 18