Unidentified Flying Objects Author:Isaac Asimov UFOs: Space aliens? Tricks of the weather? Secret military craft? Elaborate hoaxes? Mirages? A serious subject worthy of scientific investigation or just an annoying distraction? UFOs have pestered people for centuries, but only in the last half of the twentieth century have they so beguiled us and captured our imagination. Isaac Asimov has some... more » definite ideas on the whole issue of UFOs, fact and fancy.« less