A gold record ready to be attached to a Voyager space probe, USA, circa 1977. Voyager 1 and its identical sister craft Voyager 2 were launched in 1977 to study the outer Solar System and eventually interstellar space. The record, entitled 'The Sounds Of Earth' contains a selection of recordings of life and culture on Earth. The cover contains instructions for any extraterrestrial being wishing to play the record. (Photo by NASA/Hulton Archive/Getty Images)
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Hulton Archive NASA