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A few days ago I posted a video by José Francisco Salgado showing the sky over telescopes in Chile. He’s just put up another one, this time showing the motion of the sky over several observatories: “Sidereal Motion” . Sidereal motion is literally the movement of the stars; the apparent rising and setting caused by the rotation of the Earth. You don’t notice it second-by-second as you watch the sky,… Broadcasting platform : Vimeo Source : Bad Astronomy Discovery Date : 25/02/2011 14:56 Number of articles : 2
