QUIET SUN: With no sunspots actively flaring, the sun's X-ray output has nearly flatlined. Solar activity remains low, and no strong flares are expected today. Solar flare alerts: text, voice.
AMAZING ICE HALO DISPLAY: Yesterday, sky watchers around the Marshall Space Flight Center in Huntsville, Alabama, witnessed something amazing: A complex network of luminous arcs and rings surrounded the afternoon sun. "I've never seen anything quite like it," says eyewitness Bill Cooke, head of NASA's Meteoroid Environment Office. Solar physicist David Hathaway snapped this picture of the display:
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Image credit and copyright: David Hathaway/NASA/MSFC
The apparition might be connected to hurricane Sandy. The core of the storm swept well north of Alabama, but Sandy's outer bands did pass over the area, apparently leaving behind a thin haze of ice crystals in cirrus clouds. Sunlight shining through the crystals produced an unusually rich variety of ice halos.