12/01/09 Refraction and Diffraction
12/02/09 Halo Display Above Granby, Colorado
12/03/09 Creux du Van
12/04/09 Zodiacal Light from Mauna Kea
12/05/09 Cathedral Rock
12/06/09 Slot Canyon in Southwestern Virginia
12/07/09 Mechanical Weathering and Root Pry
12/08/09 Elephant Trunk Nebula
12/09/09 Snowfall in Houston, Texas
12/10/09 Table Mountain
12/12/09 Cirrocumulus and Altocumulus Clouds
12/14/09 Purple Light and Twilight Arch
12/15/09 Banff Wildlife Crossing Bridge
12/16/09 Shimmer Tree
12/17/09 Santa Cruz Surfer and Surfer Bow
12/18/09 Snowdrift on Keweenaw, Michigan
12/19/09 Shuttlecock Fern
12/20/09 Omega Sunrise
12/21/09 Mendenhall Glacier
12/22/09 Cirrus Tree
12/23/09 Christmas Tree Nebula
12/24/09 East Coast Snowstorm
12/25/09 Bentley Hexagonal Plate Crystal
12/27/09 White Rocks and Uric Acid
12/28/09 Mars on Earth
12/29/09 Rose Hips and Snow in Scotland
12/30/09 Cave Point Karst
12/31/09 Blue Earth, Blue Moon