| 21. | Oct . 4, 1957 : Soviets launch Sputnik space satellite, indicating their advances in rocket science.
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| 22. | Yea, many space satellites actually been to sun.
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| 23. | Van Allen led the scientific community for the inclusion of scientific research instruments on space satellites.
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| 24. | On April 24, 1970, the first Chinese space satellite, Dong Fang Hong I, was successfully launched.
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| 25. | In this position, Lucas designed the thermal control system for the United States'first space satellite, Explorer 1.
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| 26. | In large part, the United States owes its military dominance to a virtual monopoly on space satellites.
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| 27. | Space satellites began using PVs in 1958.
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| 28. | Unnoticed by the characters, a space satellite in the distance falls from the sky into the ocean.
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| 29. | Founded in 1960, the office builds and operates space satellites that take pictures and eavesdrop on telecommunications.
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| 30. | Under analysis, all the signals proved to be false alarms : usually stray radio racket from space satellites.
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