base[VIII-2]. To many persons this incident seemed a simultaneous visual and radar sighting of a single unknown object but the Air Force soon demolished this theory. A study of the facts revealed that the movement of the radar target and that of the mysterious light had not coincided. The radar target had traveled from north to south, had then reversed direction, had slowed down, speeded up, and moved erratically. The light, however, had remained steadily in the north, diminishing in size and brilliance but not vanishing. It behaved, in fact, like the image of a star or a planet seen through turbulent atmosphere (see _Chapter_ IV). For several nights before the sighting, many residents in this part of Michigan had noticed a similar light that appeared in the northern sky each evening at about the same time and place, displaying various changing colors. The investigators were able to identify the shining unknown as the star Capella. The position of the lights coincided with that of the star for that time, date, and latitude. Capella was at lower culmination--that is, at the lowest point of its swing around the pole star, just skirting the horizon where its spectacular blue, yellow, and red twinkling is familiar to astronomers of the region. The pilot’s description, and the fact that he could get no closer to it even after a thirty-minute chase, confirmed this identification. Neither the brief blip that appeared on the plane’s radar nor the erratic returns picked up by ground radar had any relation to the star; they were merely phantom returns caused by weather conditions[VIII-2]. Like this Michigan sighting, many UFO problems are difficult to solve because they result from more than one cause. The observations seem at first glance to refer to a single phenomenon, although actually two or more unrelated phenomena are involved. On August 1, 1952, two days after the Michigan incident, such a puzzle arose with an impressive radar-visual-photographic sighting near Bellefontaine, Ohio[VIII-2]. At 10:45 A.M. C.D.S.T., the radar operator at the Air Defense Command post picked up an unidentified target north of Dayton, moving southwest at a speed of about 525 miles an hour. Two jets from Wright-Patterson Air Force Base were scrambled for an intercept and were vectored in by ground control. Since the ground radar was not equipped with height-finding devices, however, the operator could not direct the pilots to a specific altitude; he could only tell them whether they were nearer to or farther from the target.