Year 2019, Month 12
- 01: Starburst Galaxy M94 from Hubble
- 02: Mercury Crosses a Quiet Sun
- 03: M27: The Dumbbell Nebula
- 04: Electric Night
- 05: Spiral Galaxy NGC 6744
- 06: Pleiades to Hyades
- 07: Lines of Time
- 08: Geminid Meteors over Chile
- 09: Looking Sideways from the Parker Solar Probe
- 10: Starlink Satellite Trails over Brazil
- 11: N63A: Supernova Remnant in Visible and X-ray
- 12: Decorating the Sky
- 13: Full Moon Geminids
- 14: Interstellar Comet 2I/Borisov
- 15: Mammatus Clouds over Nebraska
- 16: The Magnetic Fields of Spiral Galaxy M77
- 17: The Horsehead Nebula
- 18: A Hotspot Map of Neutron Star J0030's Surface
- 19: Apollo 17's Moonship
- 20: Late Afternoon on Mars
- 21: Solstice to Solstice Solargraph Timelapse
- 22: Solstice Illuminated: A Year of Sky
- 23: Places for OSIRIS-REx to Touch Asteroid Bennu
- 24: A Northern Winter Sky Panorama
- 25: An Annular Solar Eclipse over New Mexico
- 26: The Northern Winter Hexagon
- 27: A Partial Solar Eclipse Sequence Reflected
- 28: A Distorted Sunrise Eclipse
- 29: Cassini Spacecraft Crosses Saturn's Ring Plane
- 30: Messier 20 and 21
- 31: M33: The Triangulum Galaxy