Science ❯ Space Exploration

Comets

Halley's Comet Cometary Behavior Comet Thatcher 21P/Giacobini-Zinner Comet Encke 55P/Tempel-Tuttle Comet Swift-Tuttle 3I/ATLAS Debris C/1861 G1 Thatcher Comet Historical Comets Orbital Mechanics

Eta Aquariid Meteor Shower Peaks Before Dawn Under Bright Moonlight

Moonlight this year will likely cut the Halley’s‑Comet display to only a few visible meteors per hour.

Orionid Meteor Shower Begins, With Peak Oct. 21–22 Under Moonless Skies