pleasehelpme1347 pleasehelpme1347

24-04-2020
Geography

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Please help me!!!
Explain how astronomers use red shift and blueshift.

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bizzyliz9 bizzyliz9

24-04-2020

Astronomers use redshirts to track the rotation of our galaxies, tease out the subtle tug of a distant plant on its parent star, and measure the expansion rate of universe.

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