Orb UFO Sighting white in color westbound large white light surrounded the UFO Sturgis MI U.S.

On August 24th, 2016 at approximately 0600 hours, I was on my back porch smoking a cigarette. My porch is on the West side of the residence and it faces toward Sturgis MI U.S. I was looking at the sky to see if I could see anything strange which I do every morning. Weather conditions where clear and dry, and there were only a hand full of stars out. I was scanning the sky when off to the northwest I observed a large orb type UFO, white in color suddenly appear traveling westbound in a straight line direction. The UFO was glowing and traveled for approximately 5 seconds when the UFO expanded and vanished. The UFO was approximately the size of a penny and when expanded it was 4 to 5 times it's size staying circular. This incident has boggled me because the reaction of the light. I have played the incident over and over in my mind. I then realized when the light expanded into a larger circle and vanished, the light had closed shut like the UO had entered something. MUFON