Science ❯ Astronomy ❯ Celestial Events

Comets

Comet Lemmon C/2025 A6 (Lemmon) 3I/ATLAS Tsuchinshan-ATLAS Tsuchinshan-Atlas Swift-Tuttle C/2023 A3 (Tsuchinshan-ATLAS) C/2023 A3 Tsuchinshan-ATLAS Comet C/2025 A6 (Lemmon) Comet 109P/Swift-Tuttle

Sungrazer Comet Could Light Up Early April Skies After Close Solar Pass

Astronomers say any show will depend on whether the comet survives its near miss with the Sun.

NASA Scientist Proposes 5 BC Comet as Star of Bethlehem in Peer-Reviewed Study

Interstellar Comet 3I/ATLAS Clears Earth as Spacecraft Capture Rare Sun‑Side Views

Ursid Meteor Shower Peaks Tonight Into Early Monday Under New-Moon, Solstice Skies

Tabloids Revive 2000 Comet Doomsday Claim as NASA Reports No Threat This Year

December Sky Watch: Supermoon on Dec. 5, Geminids Peak Dec. 13–14

Leonid Meteor Shower Peaks Overnight With Modest Rates and Dark Skies

Leonid Meteor Shower Peaks Predawn Nov. 17 Under Dark, Moonlight-Free Skies

Green Comet Lemmon Briefly Visible Over Bengaluru

3I/ATLAS Passes Perihelion as Spacecraft Step In to Observe the Interstellar Comet

Weekend’s Last Best Look at Twin Green Comets Before Moonlight Takes Over

Comet Lemmon Enters Peak Viewing Window for Naked‑Eye Spectacle Oct. 25–31

Twin Comets Lemmon and SWAN Light Up Northern Skies as Brief Viewing Window Peaks

Comet Lemmon Reaches Peak Visibility, A Bright Binocular Target in the Evening Sky

Aurora Streak Across Northern and Eastern Germany After Weekend Solar Storm

Two Long-Period Comets Enter Peak Viewing: SWAN Closest Now, Lemmon Tuesday

Comet Lemmon Makes Oct. 21 Close Pass Under New-Moon Skies

Comet Lemmon Makes Closest Approach Oct. 20–21 With Prime Viewing Under New Moon

Interstellar Comet 3I/ATLAS Surprises Researchers With CO2-Rich Coma and Nickel Vapor

Two Comets Share the Night Sky This Weekend as Swan Peaks, Lemmon Nears Earth