Burning spherical-shaped UFO over Madison

On December 2014, an automobilist has seen, in the sky, an incredible burning fireball while he was driving near Madison, in the state of Wisconsin.

Witness statement:

12/10/2014, 3:15PM. I was on the road near Madison (Wisconsin), when I noticed a burning fireball like object in the sky. It flew slowly from east to west and ascended. I stopped my car and took a photo before it disappeared into the clouds. I heard the swishing sound of the object at this time. It was about 60-80(?) feet in diameter and fearsome. »