[/caption] Cold enough for you? Jason Ahrns captured this brilliant Sun pillar, “reaching down into the trees just below the Geophysical Institute, University of Alaska Fairbanks on a nice -40 C (or F — its all the same) day,” Jason said. A Sun (or solar) pillar is a vertical shaft of light extending upward or … Continue reading "Astrophoto: Stunning Alaskan Sun Pillar"