In an wiki article, observable universe, it was mentioned that,

Mass (ordinary matter) 1.5×10^53 kg

I wonder how did we measure the mass of our observable universe?

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    $\begingroup$ This is explained in the same article: en.wikipedia.org/wiki/… You might want to read that first and then ask if anything is still this unclear. $\endgroup$
    – SpaceCore
    Aug 10 '20 at 22:26
  • $\begingroup$ @uhoh sorry for miscommunication. I have updated the link. $\endgroup$ Aug 11 '20 at 7:16
  • $\begingroup$ okay I tried to give you the benefit of the doubt, but ya the answer to your question is in your linked article itself. Maybe you can post a short answer yourself now? $\endgroup$
    – uhoh
    Aug 11 '20 at 13:36
  • $\begingroup$ Don't we simply count the masses of all galaxies together? $\endgroup$
    – Giovanni
    Aug 18 '20 at 6:16

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