So this morning I was flying by a ski hill that was making snow. This led to lots of ice crystals in the air.
Ice crystals typically refract visible light 22 degrees, which leads to the halo that one can often see around the moon or sun.
This was one of the better such halos I'd ever seen. Aerial photography let me put the camera up 400' above the ground to really capture the full view.
Just after this, with the temp at -4F and the wind chills at -25F I returned to the warmth of the car - boy it was chilly!