Why Does the Big Bang Theory Predict That the Cosmic

question 1

Multiple Choice

Why does the Big Bang theory predict that the cosmic background radiation should have a perfect thermal radiation spectrum?

• A) The background radiation came from the heat of the universe, with a peak corresponding to the temperature of the universe.
• B) The spectrum of pure hydrogen gas must be a perfect thermal radiation spectrum.
• C) The spectrum of 75 percent hydrogen and 25 percent helium must be a perfect thermal radiation spectrum.
• D) The light from all the stars and gas in the sky averaged over the entire universe will be a perfect thermal radiation spectrum.
• E) It doesn't predict that the cosmic background radiation should have a perfect thermal radiation spectrum.

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