Checking the most probable explanations first, ATIC officials found that the nearby Willow Run Airport had had no aircraft in the vicinity at the time and that no star or planet seemed to be involved. Further investigation showed that the flying bird cage was actually the radio telescope of the University of Michigan. The telescope was installed on the top of Peach Mountain and was clearly visible from the road on which the witnesses were traveling. On the underside of the eighty-five-foot “dish” was a wire-mesh structure that suggested the bird cage. At the time of the sighting the dish was facing in the direction of the witnesses and was illuminated by a floodlight as well as by the bright moonlight. It had seemed to be following the car only because the car itself was moving. The astronomers operating the telescope were rotating the dish from the horizon to the zenith, and the yellow lights dimmed because the witnesses were seeing less and less of the surface. The “circle” of red lights was the red aircraft-warning lights on the WUOM radio tower, which lay in a direct line between the telescope and the witnesses. When the dish reached the zenith and was pointed to the sky overhead, the operating crew turned off the floodlights. The dish was no longer visible to the witnesses, who interpreted the sudden disappearance as a sudden vertical ascent into the sky[XII-1]. _UFOs from Reflections_ Reflections from the bright sun have produced many elusive UFOs. All pilots are familiar with the luminous objects that sometimes appear in the air below a plane on a sunny day, particularly when the plane is flying over wooded terrain that is partly obscured by atmospheric haze. The sun has been reflected momentarily from a broad shiny surface, such as the metal roof of a farm building; because of the contrast between the bright surface and the dark forest surrounding it, the image appears to be a UFO floating high in the air. Sometimes the sun shines on a bright metallic surface, such as the chrome trim of an automobile, and by chance is reflected directly into the eyes of a passer-by. If he then glances at the sky he may see a whole fleet of UFOs; the bright flash has produced a temporary chemical change in the retina so that for a moment or two the eye sees a series of saucer-shaped images of the sun. A photographer’s flashbulb or a bright flash of lightning can produce similar after-images.