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What did Edwin Hubble discover by observing absorption spectrum blue light red light grey matter ultra-violet light
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What did Edwin Hubble discover by observing absorption spectrum

blue light
red light
grey matter
ultra-violet light

User Gukoff
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Answer:

According to different sources Edwin Hubble observed red light of galaxies directly proportional to the distance of the galaxy from earth.

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User Mayur Nagekar
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