c. it corresponds to the same temperature as the beginning of the universe
Cosmic background radiation is used as evidence of the Big Bang theory because it is believed to be leftover radiation from the early stages of the universe. According to the Big Bang theory, the universe began with a highly dense and hot state, and as it expanded, it cooled down. The cosmic background radiation corresponds to a uniform temperature of approximately 2.7 Kelvin, which aligns with the predicted temperature from the early universe. This provides strong evidence in support of the Big Bang theory.
Why is cosmic background radiation used as evidence of the bif bang theory?
a. it is emitted from a black hole at the center of the universe
b. its wavelength is getting shorter, so it must be very old
c. it corresponds to the same temperature as the beginning of the universe
d. it is not vert common, so it must be running out
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