VICTOR HABBICK VISIONS / SCIENCE PHOTO LIBRARY VICTOR HABBICK VISIONS / SCIENCE PHOTO LIBRARY
UFO and crop circles. Computer illustration of an Unidentified Flying Object (UFO) over crop circles. UFOs are supposed to be the spacecraft in which extraterrestrials (ETs) visit Earth. Some people believe that these circular depressions sometimes found in crops mark the site of UFO landings.
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