Pic of the Day

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  http://l3.yimg.com/bt/api/res/1.…

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  • i wonder how many light years across just this thing ismoldero
  • horsehead nebula:It has a diameter of approximately 4 parsecs (13 light-years) and a total mass of about 250 solar masses.OP31
  • 250 solar massesOP31
  • 13 light years = 7.64204976 × 1013 milesOP31

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