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What is the pressure of the universe?

  1. Apr 20, 2007 #1
    What is the current pressure of the (whole) universe? Or the average pressure in the universe?
  2. jcsd
  3. Apr 20, 2007 #2
    This question is not clear. Even on earth the pressure change from place to place. I ve heard that the pressure of interstellar space is about 10e-15 bar which is mainly due to hydrogen molecules.
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