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  1. Jun 2017
  2. science.gsfc.nasa.gov science.gsfc.nasa.gov
    Bio - Floyd William Stecker
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    1. beasleya 07 Jun 2017
      digipo:date:2017-06-07 digipo:analysis:speed_of_light
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    science.gsfc.nasa.gov/sed/bio/floyd.w.stecker