| 41. | At the very end of the credits, the planet Mars is revealed with an artificial satellite in orbit.
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| 42. | Could one talk about the ( im ) proper motion of a planet, moon, or artificial satellite?
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| 43. | The souvenir sheet says " Launch of Artificial Satellite'Kwangmyongsong No . 2'in the DPRK ".
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| 44. | The space race began in October 1957 when Moscow launched Sputnik 1, the world's first artificial satellite.
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| 45. | One of the first launches there was that of Sputnik in 1957, the world's first artificial satellite.
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| 46. | To me, artificial satellites add a touch of motion and surprise to the otherwise steady, unchanging night sky.
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| 47. | By far this is the most common type of orbit with approximately 2, 465 artificial satellites orbiting the Earth.
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| 48. | In 1957, Zhang Yuzhe and Zhang Jiaxiang worked together and published a paper discussing the orbit of artificial satellite.
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| 49. | It is a converted ICBM used for launching artificial satellites into orbit, operated by launch service provider ISC Kosmotras.
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| 50. | Space-based lightning detectors, on artificial satellites, can locate range, bearing and intensities by direct observation.
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