What is the approximate number of galaxies in the known universe

Physics
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What is the approximate number of galaxies in the known universe, assuming that the Milky Way has an average mass and that all of the mass in the known universe is in galaxies?

Sep 1st, 2015

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Estimates of the mass of the Milky Way vary, depending upon the method and data used. At the low end of the estimate range, the mass of the Milky Way is 5.8*10^11.the total Number of galaxies is approximated to be 225 million . 

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Sep 1st, 2015
Henry Ferguson explained that every halo with a certain mass will form a galaxy and this means that if the current scientific approximation is over 200 million with assumption all the mass on the universe lies on the galaxies the the approximation will bring between 500 million to 1 trillion galaxies in the universe.
Sep 1st, 2015

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