Christmas Angel

This afternoon my older daughter noticed a tree bending perilously towards our neighbor's house across the street. My husband went over with the girls to let them know since the phones were out. Together they shook the snow off the tree and tied it back. Then they went in the neighbor's house for some Christmas cookies and a little visit and while they were there, our neighbor showed them the picture below. The photo was taken by him on Christmas Eve when he had noticed what looked like the shape of an angel on our roof.  He figured it was a shadow, but couldn't see anything that could be casting such a shadow.  Looking closer, he realized that the melting frost was making that shape. It was melting only in the outline of an angel and only on that one section of the dome (sun doesn't get to that section most of the winter).  He couldn't think of any practical reason for it -- and since he's a Biology Professor, his scientific inquiry chops are certainly sharper than mine.  He took several pictures and emailed this one to us tonight. So, for whatever reason, we had a rather distinct form of an angel with wings on our roof this Christmas!  Any theories?

The wings are very distinct, but if you look carefully, you can see what looks like a large triangle between them with a little circle shape on top of it.  If you're really looking (& using a bit of imagination, you can see a cross in the middle of the triangle) -- I think it's pretty cool.  I'm sure like an inkblot, different people would see different things, but that's how I like to think of it.

On the other side of this wall is our daughters' room.  This is the side where Gracie sleeps -- Gracie's middle name is Angelina -- which makes the whole thing even more intriguing :)