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Timeline Prehistory Cave art and sculptures depict UFOs and E-T.-type figures; myths in different cultures tell of wise beings who came from the sky BC-1890s_ Early manuscripts, records, and paintings show evi- dence of unknown aerial objects across the world 1896 States June 30, 1909 unknown February 25, 1942 Los Angeles Air Raid; U.S. military shoots at UFO as it hovers over Culver City, California 1943-1944 Small balls of light called foo fighters are observed by fighter pilots of World War IT 1946-1947 Sweden and nearby countries are plagued by wave of “ghost rockets” June 24, 1947 Pilot Kenneth Arnold sights UFOs over Mount Rainier, Washington, starting the Modern Age of UFOs July 4, 1947 UFO allegedly crashes outside of Roswell, New Mexico; evidence is reportedly covered up by the U.S. military July 7, 1947 ily 7, 1947 Edwards Air Force Base in southern California experi- ences a wave of sightings directly over the base January 8, 1948 Captain Mantell fatally crashes his plane while in pursuit of a UFO over Louisville, Kentucky July 25, 1948 Pilots Charles and Whitted nearly collide with a UFO while flying from Texas to Georgia 117 Strange zeppelin-like airships are sighted across the United Huge explosion occurs over Tunguska, Russia: cause