Year 2023, Month 12
- 01: Milky Way Rising
- 02: Startrails over Beijing Ancient Observatory
- 03: Moon Setting Behind Teide Volcano
- 04: Plane Crossing Crescent Moon
- 05: Energetic Particle Strikes the Earth
- 06: Stars Versus Dust in the Carina Nebula
- 07: Orion and the Ocean of Storms
- 08: Vega and Comet 12P/Pons-Brooks
- 09: Pic du Pleiades
- 10: Big Dipper over Pyramid Mountain
- 11: Solar Minimum versus Solar Maximum
- 12: Aurora and Milky Way over Norway
- 13: Deep Field: The Heart Nebula
- 14: Supernova Remnant Cassiopeia A
- 15: Betelgeuse Eclipsed
- 16: Crescent Enceladus
- 17: Geminids over China's Nianhu Lake
- 18: The Same Color Illusion
- 19: NGC 1499: The California Nebula
- 20: Ice Halos over Bavaria
- 21: Three Galaxies and a Comet
- 22: 183 Days in the Sun
- 23: A December Summer Night
- 24: NGC 2440: Cocoon of a New White Dwarf
- 25: Cathedral, Mountain, Moon
- 26: IC 443: The Jellyfish Nebula
- 27: Rainbow Aurora over Icelandic Waterfall
- 28: Jupiter and the Geminid
- 29: Shakespeare in Space
- 30: The Persistence of Moonlight
- 31: Illustris: A Simulation of the Universe