A simple equation to relate the scale size of the universe


A simple equation to relate the scale size of the universe today to the scale size of the universe at a previous time in the history of the universe is 1 + z = atoday/athen where athen is the scale size at the time in the past, atoday = 1 is the assumed scale size today, and z is the redshift. Using the redshift value of 1100 for a time just after the big bang when the universe was a hot gas, how many times has the universe since expanded?

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Physics: A simple equation to relate the scale size of the universe
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