Multiple Choice
You observe a distant galaxy.You find that a spectral line normally found in the visible part of the spectrum is shifted toward the infrared.What do you conclude?
A) The galaxy is moving away from you.
B) The galaxy is moving toward you.
C) The galaxy has very weak gravity.
D) The galaxy is made purely of hydrogen.
E) The composition of the galaxy is changing.
Correct Answer:
Verified
Correct Answer:
Verified
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