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Heliocentric_vs_Geocentric_views_a_history_of_Astronomy_TPT.webm (WebM audio/video file, Vorbis/VP8, length 6 min 47 s, 654 × 480 pixels, 772 kbps overall)
English: Modelling the sky above us we need to be able to talk to others about what we have seen. We need to be able to describe the object, what time we observed it, and be able to tell where in the sky the object is. Vocabulary Focus; Celestial Sphere, Horizon, Zenith, Azimuth, Altitude
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|current||23:26, 23 May 2013||6 min 47 s, 654 × 480 (37.5 MB)||Justin.a.higgins||User created page with UploadWizard|
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|Completed transcode 01:34, 21 February 2014||Low bandwidth Ogg video (160P)|
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