The record, titled The Sounds of Earth, contained greetings from people in 55 languages, whale songs, a sonic essay about the formation of Earth and the development of humanity, images from across the Solar System involving chemistry and humanity, a selection of 27 compositions from around the world, and the brainwaves of a woman newly in love note this woman was Carl Sagan's future wife Ann Druyan the two had just confessed their love for each other mere days before the recording, despite both being married to other people at the time. With only a brief six-week time frame and a paltry $25,000 budget, Sagan and his team still managed to illustrate the diversity of humanity. After a few weeks of brainstorming with another person, Carl Sagan came up with the idea of a 12-inch record containing sounds, music, and images of Earth. These were intended to carry replicas of the Pioneer Plaques originally, but given that these could return further science than the Pioneer probes, a simple plaque was not enough. Shortly thereafter, the Voyager probes, 1 and 2, were created to take advantage of a specific once-in-two-centuries alignment of planets that would allow consecutive flybys of all five outer planets with a single launch note Voyager 1 flew by Saturn's moon Titan and thus out of the plane of the Solar System, but it could have flown by Pluto if Titan wasn't so valuable. The mission planners knew that these spacecraft would never return to the Solar System, so they carried two identical plaque featuring the image of a human male and female, a map of pulsars to locate the probe, and a schematic of their trajectories through the Solar System note Pioneer 11's diagram did not show it visiting Saturn-NASA only diverted it toward Saturn to test out flyby procedures for the upcoming Voyager probes. Pioneer 10 visited Jupiter before making its way out to the edge of the Solar System, and Pioneer 11 used Jupiter's gravity to swing it over the top of the Sun all the way to Saturn. In the 1970s, NASA was preparing their first missions to the outer planets-Jupiter, Saturn, Uranus, Neptune, and Pluto.
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