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22 August, 03:23

When an astronomer sees certain stars and galaxies that look much redder than expected, what conclusion might the astronomer draw about the motion of that galaxy?

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Answers (2)
  1. 22 August, 05:37
    0
    The galaxy is moving away from Earth.

    Explanation:

    Plato
  2. 22 August, 07:05
    0
    It all comes to the doppler effect, the red shift means that the galaxy is moving away from us. The redshift is a result from the doppler effect, so as the galaxy moves away the wavelength expands, increasing the wavelength which responds to the red light.
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