How To Use Hubble's law In A Sentence

• The expansion of the Universe is described by a very simple equation called Hubble's law; the velocity of the recession of a galaxy is equal to a constant times its distance.
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• Does this prediction of faster - than - light galaxies mean that Hubble's law is wrong?
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• Notice that, according to Hubble's law, the universe does not expand at a single speed.
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