By Hanneke Weitering, Staff Writer-Producer | September 29, 2016 05:22pm ET
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Credit: NASA/JPL-Caltech Voyager's Golden Record
NASA's twin Voyager spacecraft launched in August and September 1977. Aboard each spacecraft is a golden record, a collection of sights, sounds and greetings from Earth. There are 117 images and greetings in 54 languages, with a variety of natural and human-made sounds like storms, volcanoes, rocket launches, airplanes and animals.
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Credit: NASA The Sounds of Earth