Great Basin National Park: Astronomy Ranger Minute videosunu ücretsiz izle

(67.1 MB) 12 May 2016 tarihinde eklendi 110 kez izlendi Nature
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It has been asked "what do we lose, if we lose the night?" Take a journey through the brilliant night skies of Great Basin National Park. The dark skies are exceptional but are under threat, but ask yourself this question: does a solution exist?