Hubbles law

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Hubble's law Proposed by Edwin Hubble (1929), it claimed a linear relation between the distance of galaxies from us and their velocity of recession, deduced from the red shift in their spectra. The Hubble constant (symbol H0) is the rate at which the velocity of recession of galaxies increases with distance from us. The inverse of the Hubble constant is the Hubble time, which gives a maximum age for the Universe on the assumption that there has been no slowing of the expansion.

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