EPOD - a service of USRA

03/14/20 Encore - Sunset Rainbow Over Samos Island, Greece

02/28/20 Encore - Upper Tangent Arc, Halo, Sundogs and Glitter Path Observed from Vancouver

02/10/20 Birds on the Move

01/11/20 Encore - Lake Irene's Milky Way Mirror

01/06/20 Alpenglow and Moonrise

10/04/19 Volcanic Dusk Over DeSoto, Kansas

09/08/19 Archive - Visible and Near-Infrared Views of the Meuse River and Rochers de Néviaux

08/28/19 Super Crescent Moon with Light Pollution in Curitiba, Brazil

08/07/19 Universe in a Puddle: Waves, Clouds, Trees, Oil Sheen and Bugs

08/06/19 Iridescence in the Kitchen

07/17/19 Living Room Projection

06/01/19 Encore - Manitoba Aurora and Meteor

05/27/19 Tree Reflection in Lake Wanaka

05/13/19 Aurora Observed from Thingvellir National Park, Iceland

04/12/19 Sun-splashed Spider Web and Diffraction Colors

04/01/19 Why is the Sky Blue?

01/30/19 Bioluminescent Phytoplankton in the Persian Gulf and Orion Overhead

01/19/19 Encore - Thus Hath the Candle Singed the Moth

12/17/18 Chaos and Order Along the Ogden River

12/07/18 Spider Web Colors

11/21/18 Pine Needles, Sunlight and Concentric Circles

11/12/18 Dewdrop Optics

10/16/18 Bishop Lakes and Specular Reflection

09/29/18 Encore - Polarized Window Frost

09/08/18 Encore - Gilded Light of Glen Canyon

08/04/18 Encore - The Cottian Alps in Alpenglow

07/12/18 What Glows in the Night?

07/11/18 Sunbeams Through a Moonstone

06/18/18 Science and a Cup of Tisane

05/23/18 Silhouettes of Mount Pelmo Made by the Setting Sun

05/21/18 Northern Lights Over Sleeping Bear Dunes National Lakeshore

03/29/18 Raindrop Shapes on Fruit and Leaves

02/06/18 Bioluminescence in the Gulf of Oman

01/19/18 Supernova SN 2018gj

11/14/17 Opalite Colors

10/21/17 Encore - Icelandic Aurora

10/02/17 Aurora from Strongest Solar X Flare in a Decade

09/25/17 Caustic Reflections and More

08/31/17 Caustics in the Virgin River, Utah

06/24/17 Encore - Brilliant Sun Pillar Over Jenison, Michigan

06/21/17 Hraunfossar and Northern Lights

06/09/17 Springtime Aurora Over Quebec and Massachusetts

05/11/17 "Because It’s There"

04/20/17 Optics in My Home Garden

02/09/17 Clouds Lit From Below

12/31/16 Encore - True Color of the Moon

12/01/16 Pico de Teide and Cloud Shadow

10/27/16 Earthshine, Crescent Moon and Mercury

08/31/16 The Color of Water

08/15/16 Estimating Tree Height Using Natural Pinhole Cameras