what is hubble's theory
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The Hubble Expansion
During the 1920's and 30's, Edwin Hubble discovered that the Universe is expanding, with galaxies moving away from each other at a velocity given by an expression known as Hubble's Law: v = H*r. Here v represent's the galaxy's recessional velocity, r is its distance away from Earth, and H is a constant of proportionality called Hubble's constant.
During the 1920's and 30's, Edwin Hubble discovered that the Universe is expanding, with galaxies moving away from each other at a velocity given by an expression known as Hubble's Law: v = H*r. Here v represent's the galaxy's recessional velocity, r is its distance away from Earth, and H is a constant of proportionality called Hubble's constant.
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THE THEORY USED TO DETERMINE THESE VERY GREAT DISTANCES IN THE UNIVERSE IS BASED ON THE DISCOVERY BY EDWIN HUBBLE THAT THE UNIVERSE IS EXPANDING.IN 1929 , EDWIN HUBBLE ANNOUNCED THAT ALMOST ALL GALAXIES APPEARED TO BE MOVING FROM US
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