Which types of wave are used to support the theory that galaxies are expanding

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Which types of wave are used to support the theory that galaxies are expanding

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Dulcie 3 years 2021-08-22T13:17:29+00:00 1 Answers 21 views 0

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    2021-08-22T13:18:51+00:00

    Visible Spectrum

    Explanation:

    which uses red shift to indicate objects making away while the blue shift indicates objects moving down.

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