How does general relativty predict or calculate the mass of the universe? And (if so) how do scientists know that 90% of mass is dark matter?
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How does general relativty predict or calculate the mass of the universe? And (if so) how do scientists know that 90% of mass is dark matter?
Order of Kilopi
General relativity is a theory that takes as input the mass density of the universe (and any cosmological constant), and outputs the observed redshift as a function of distance. By observing the latter, we infer the correct input.
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