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Ned Wright's cosmology calculator will calculate all of the distances, and the age of the universe at the time the light was emitted, given a redshift $z$ and some cosmological parameters. Your best bet is to look up the redshift of the objects you're interested in, rather than trying to start from a comoving distance (which was originally calculated from ...


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I'm not sure I understand the question, but I'll try to provide some context for the paragraph from Wikipedia. It's ambiguous what law Hubble should be credited with finding, because there are many different notions of distance that can be used in cosmology, and all of them satisfy some equation of the form $H_0 D = cz + O(z^2)$, and Hubble's original data ...


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