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Mathematics 7 Online
OpenStudy (anonymous):

Galaxies moving away from us will emit light that is redder than we would otherwise expect. True False

OpenStudy (anonymous):

well, frankly I'm not sure, but considering red has lower energy than blue (due to higher wavelength) then it's probably true. Logically the light from galaxy that is moving away from us have to travel further and thus losing more energy along the way.

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