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Why We Know the Earth is Round

  1. captainfredonia reblogged this from laughingsquid
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  5. fieldofyellowdandelions reblogged this from laughingsquid and added:
    Why We Know the Earth is Round
  6. heyyoulookyhere reblogged this from laughingsquid and added:
    quick reassurance… to something we know. a cool lesson though.
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