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    Physics & Astronomy
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    Discovering the Essential Universe
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    Exam 13: The Galaxies
  5. Question
    An Active Galaxy Is Measured to Be 100 Mpc Away
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An Active Galaxy Is Measured to Be 100 Mpc Away

Question 200

Question 200

Multiple Choice

An active galaxy is measured to be 100 Mpc away.How many million years ago did the light we see now leave this galaxy?


A) 30.7
B) 100
C) 326
D) 652

Correct Answer:

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