I asked him about some of the other possibilities. He repeated the balloon, canopy-reflection, and sundog theories but he refused to comment on them since, as he said, he was an astrophysicist and would care to comment only on the astrophysical aspects of the sightings. I drove back to Dayton convinced that the UFO wasn't Venus. Dr. Hynek had said Venus would have been a pinpoint of light. The people in the tower had been positive of their descriptions, their statements brought that out. They couldn't agree on a description, they called the UFO "a parachute," "an ice cream cone tipped with red," "round and white," "huge and silver or metallic," "a small white object," "one fourth the size of the full moon," but all the descriptions plainly indicated a large object. None of the descriptions could even vaguely be called a pinpoint of light. This aspect of a definite shape seemed to eliminate the sundog theory too. Sundogs, or parhelia, as they are technically known, are caused by ice particles reflecting a diffused light. This would not give a sharp outline. I also recalled two instances where Air Force pilots had chased sundogs. In both instances when the aircraft began to climb, the sundog disappeared. This was because the angle of reflection changed as the airplane climbed several thousand feet. These sundog-caused UFO's also had fuzzy edges. I had always heard a lot of wild speculation about the condition of Mantell's crashed F-51, so I wired for a copy of the accident report. It arrived several days after my visit with Dr. Hynek. The report said that the F-51 had lost a wing due to excessive speed in a dive after Mantell had "blacked out" due to the lack of oxygen. Mantell's body had not burned, not disintegrated, and was not full of holes; the wreck was not radioactive, nor was it magnetized.