Our sun is n’t the only object in the sky that can produce spectacular optic effect . Take this picture choose by Sebastian Saarloos on a cold , starlit Alaskan night . This is what ’s called a “ moondog ” — a rainbow - like ring around the moon that ’s because of the contemplation of moonlight ( which is reflected sunshine ) from sparkler watch glass in the upper atmosphere .
The somewhat overexposed photograph render misty mountains in the background , along with an icy doughnut that surrounds the Sun Myung Moon . Interestingly , because all ice crystals tend to have the same hexangular shape , the moonlight ring is always the same size of it ; moondogs , also known as paraselanae , are typically seen at an angle of 22 degrees .
ViaNASA .
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