DECEMBER

Northern Mercury

The Gegenschein Over Chile

A Quadruple Lunar Halo Over Spain

In the Center of Saturn's North Polar Vortex

Plasma Jets from Radio Galaxy Hercules A

47 Tuc Near the Small Magellanic Cloud

Earth at Night

Baku Moonrise

The Astronaut Who Captured a Satellite

Time-Lapse: A Total Solar Eclipse

NGC 604: Giant Stellar Nursery

Milky Way Over Quiver Tree Forest

Apollo 17: A Stereo View from Lunar Orbit

Umbra World

When Gemini Sends Stars to Paranal

MWC 922: The Red Square Nebula

NGC 922: Collisional Ring Galaxy

A Sun Pillar Over Sweden

NGC 5189: An Unusually Complex Planetary Nebula

M33: Triangulum Galaxy

Orion over El Castillo

Saturn at Night

Comet Hale-Bopp Over Val Parola Pass

Hyades for the Holidays

Yosemite Winter Night

Makemake of the Outer Solar System

Curiosity Rover at Rocknest on Mars

NGC 6188 and NGC 6164

Zeta Oph: Runaway Star

Doomed Star Eta Carinae

Saturn's Rings from the Dark Side