The UniverseFridays Why Do Some Comets Dazzle While Others Fizzle? A comet’s brightness depends on how it’s made, how and when we see it, and even a bit of unpredictable luck By Phil Plait edited by Lee Billings Astrophotographer Brennan Gilmore captured this photo of Comet Lemmon on October 4, 2025 from central Virginia. Stay…