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Sagot :
Final answer:
Hubble proved galaxies are far away by discovering Hubble's Law and the expansion of the Universe.
Explanation:
Edwin Hubble measured the distances to galaxies and found a relationship known as Hubble's Law, which states that the farther a galaxy is, the faster it is moving away. By comparing distance estimates with recession velocities, he concluded that the universe is expanding.
Learn more about galaxies distance and expansion here:
https://brainly.com/question/43458948
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