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Instructional Video
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\n\"Crash\n\n
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\nCrash Course\n
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\nCrash Course Astronomy #27: Exoplanets\n

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\n\nFor Students\n\n9th - 10th\n
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\nToday Phil explains that YES, there are other planets out there and astronomers have a lot of methods for detecting them. Exoplanets appear to orbit nearly every kind of star, and we've even found planets that are the same size as Earth....\n
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\n\nGet Free Access\n\nSee Review\n
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Website
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\n\"Nasa\n\n
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\nNASA\n
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\nNasa Star Child: The Universe (Level 2)\n

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\n\nFor Students\n\n6th - 8th\n
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\nThis site provides a description of the universe and what it contains. Includes links to definitions, activities, and an audio song. Printable version available.\n
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\n\nGet Free Access\n\nSee Review\n
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Handout
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\n\"Windows\n\n
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\nNational Earth Science Teachers Association\n
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\nWindows to the Universe: Christian Doppler\n

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\n\nFor Students\n\n9th - 10th\n
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\nA biographical sketch of Christian Doppler (1803-1853), the Austrian mathematician whose study on the dependence of pitch upon the relative speed of source and observer resulted in the Doppler effect.\n
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\n\nGet Free Access\n\nSee Review\n
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Website
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\n\"University\n\n
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\nUniversity of St. Andrews (UK)\n
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\nUniversity of St. Andrews: Doppler Summary: Christian Andreas Doppler\n

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\n\nFor Students\n\n9th - 10th\n
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\nThis site is more than a dry listing of facts, dates, and birthplaces, as it describes stories from Doppler's boyhood and professional life that reveal the personality behind the man.\n
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\n\nGet Free Access\n\nSee Review\n
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