Silver round ball in sky heading towards Fond Du Lac county on 23

My husband and I were driving back home on I43 near the exit for 23 when my husband got my attention to an object that was a sphere and silver and shiny, had to be of decent size in the sky. After a minute 1 round light turned on that was white in color, for a few seconds we lost site of the image and when we seen it the sphere was entirely black and going behind a cloud until it was gone. Was moving slowly, then would hover for a few seconds. It just vanished. Watched for it on 23 and seen nothing more.