UFO -- Definition
An object or light seen in the sky, upon the land, or in/under water, whose appearance, trajectory, and general dynamic and luminescent behavior do not suggest a logical, conventional explanation and which is not only mystifying to the original percipients, but remains unidentified after close scrutiny of all available evidence by persons who are technically capable of making a common sense identification, if one is possible. (After J. Allen Hynek.)
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Fig. 1. Image received anonymously in 1994 as color print, without date or photo data. |
Fig. 2. Same image but overlaid with yellow ellipse to locate apparent edge of the disk. |