Penzias and Wilson detected microwave radiation because the big bang created ____.
A) shorter wavelength energy that has been redshifted by expansion
B) longer wavelength energy that has been redshifted by expansion
C) microwave radiation that has not been affected by expansion
D) shorter wavelength energy that has been blueshifted by expansion
E) longer wavelength energy that has been blueshifted by expansion
Correct Answer:
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