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 Date: 2013-05-01 03:22:19Observational astronomy Sky Aurora Constellation Event horizon Hole Heaven Physics Astronomy Space |
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Date: 2013-05-01 03:22:19Observational astronomy Sky Aurora Constellation Event horizon Hole Heaven Physics Astronomy Space |
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Closing Gaps in Traditional Sky Lore Marinus A. van der Sluijs University of Pennsylvania Museum of Archaeology and Anthropology