MY boyfriend's friendly orb.

My boyfriend Dan and I are always hearing things in his house. It is connected to a very old barn and members of his family have actually seen a woman ghost. Recently I took this picture as we were leaving his barn. The orb I believe, was either going up the stairs or coming down.We thought we had seen soemthing before we left but could not see with our own eyes. I snapped many pictures of the barn that afternoon, but only one showed the orb.