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UUID | 488e2f91-9cc2-11e6-9770-bc764e2038f2 |
This equation provides an estimate of the mass desnity of the observable universe.
According to an article posted on the University of Massachusetts website 1 , "the mass density of visible matter (i.e., galaxies) in the Universe is estimated at `3 X 10^-28 "kg"/m^3`.
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