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Monday, November 18, 2013

Why is it Dark at Night? by minutephsyics via itsoktobesmart #Astronomy #Why_is_the_Sky_Dark_Night #Space #minutephysics #itsoktobesmart

astronomy, outer space, space, universe, stars, nebulas
astronomy, outer space, space, universe, stars, nebulas
Click here to download
Why is it Dark at Night? by minutephsyics via itsoktobesmart #Astronomy #Why_is_the_Sky_Dark_Night #Space #minutephysics #itsoktobesmart
Why is it Dark at Night? by minutephsyics via itsoktobesmart #Astronomy #Why_is_the_Sky_Dark_Night #Space #minutephysics #itsoktobesmart
Click here to download
planetary rings...
planetary rings...
Click here to download

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