The 40th anniversary of Close Encounters of the Third Kind is being celebrated with a weeklong run in select theaters starting Sept. 1. Here are five fun facts about the Oscar-winning 1977 Steven Spielberg film. 1. The term “third kind,” meaning physical contact with extraterrestrials, comes from J. Allen Hynek’s book The UFO Experience: A Scientific Inquiry.
2. The aliens that come out of the spaceship were played by young girls.
3. Security for CE3K was so tight, Spielberg himself was turned away one day when he forgot his ID card.
4. When the mothership arrives at Devils Tower, an upside down R2-D2—from Star
Wars— can be seen on the rim of the vessel.
5. The unforgettable five-note theme used for communication with the aliens was picked from a compilation of 100 options from composer John Williams.