Multiple Choice
Which of the following is true about blue-shifted light that we detect from the cosmos?
A) It signifies a source that is moving toward us.
B) It is common for galaxies to emit this type of light.
C) The detected light has a longer wavelength than at the source.
D) The detected light has a lower frequency than at the source.
Correct Answer:

Verified
Correct Answer:
Verified
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