pleasehelpme1347
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 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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