Multiple Choice
If the wavelength of the background radiation peaked at 1 µm at the time of recombination, how old was the universe then compared with its age today?
A) one second old
B) 1/100th of a second old
C) 1/1,000th of a year old
D) 3,000 years old
E) several hundred thousand years old
Correct Answer:
Verified
Correct Answer:
Verified
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