xmas sunset oddity

I was in Phoenix for Xmas. We went for a walk around sunset, and there was a prominent sun dog. Looked like a double sun for a while, a binary star. Cool. When I looked at these photos, I saw something odd ... sleigh tracks running through the sun!

Bigger version viewable here.

Chandler, AZ, 12/25/2005

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In case you couldn't tell, we're having fun here. This is not a serious scientific discussion.