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from | Encarta |  |
Echo Satellite |
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| Echo and Echo II were early communications satellites launched by the United States in the early 1960s. The large, mylar-coated balloons bounced radio signals back to Earth. The Echo satellites paved the way for later, more sophisticated communications satellites. | ||||||
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| UPI/Corbis | ||||||
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| Appears in these articles: | ||||||
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| Communications Satellite | ||||||
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