DEC 1, 2019
Starburst Galaxy M94 from Hubble
DEC 2, 2019
Mercury Crosses a Quiet Sun
DEC 3, 2019
M27: The Dumbbell Nebula
DEC 4, 2019
Electric Night
DEC 5, 2019
Spiral Galaxy NGC 6744
DEC 6, 2019
Pleiades to Hyades
DEC 7, 2019
Lines of Time
DEC 8, 2019
Geminid Meteors over Chile
DEC 9, 2019
Looking Sideways from the Parker Solar Probe
DEC 10, 2019
Starlink Satellite Trails over Brazil
DEC 11, 2019
N63A: Supernova Remnant in Visible and X-ray
DEC 12, 2019
Decorating the Sky
DEC 13, 2019
Full Moon Geminids
DEC 14, 2019
Interstellar Comet 2I/Borisov
DEC 15, 2019
Mammatus Clouds over Nebraska
DEC 16, 2019
The Magnetic Fields of Spiral Galaxy M77
DEC 17, 2019
The Horsehead Nebula
DEC 18, 2019
A Hotspot Map of Neutron Star J0030’s Surface
DEC 19, 2019
Apollo 17’s Moonship
DEC 20, 2019
Late Afternoon on Mars
DEC 21, 2019
Solstice to Solstice Solargraph Timelapse
DEC 22, 2019
Solstice Illuminated: A Year of Sky
DEC 23, 2019
Places for OSIRIS-REx to Touch Asteroid Bennu
DEC 24, 2019
A Northern Winter Sky Panorama
DEC 25, 2019
An Annular Solar Eclipse over New Mexico
DEC 26, 2019
The Northern Winter Hexagon
DEC 27, 2019
A Partial Solar Eclipse Sequence Reflected
DEC 28, 2019
A Distorted Sunrise Eclipse
DEC 29, 2019
Cassini Spacecraft Crosses Saturn’s Ring Plane
DEC 30, 2019
Messier 20 and 21
DEC 31, 2019
M33: The Triangulum Galaxy
