Problemas
Hubble measured the velocity of the movement of galaxies by using square Hubble's law states that galaxies located farthest from the center of the universe square than those closest to the center.
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Luciano
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Hubble measured the velocity of the movement of galaxies by using **redshift**.Hubble's law states that galaxies located farthest from the center of the universe **move away faster** than those closest to the center.