Does the Temperature of the Cosmic Background Radiation Tell Us

question 40

Multiple Choice

Does the temperature of the cosmic background radiation tell us about the age of the universe?

• A) Yes, since it was produced at a redshift of approximately 1,000.
• B) No, we still need to know the Hubble constant to know the universe's age.
• C) No, the temperature does not but the size of temperature variations in the CMB does tell us the age.
• D) Yes, in combination with information on cosmic nucleosynthesis.
• E) No, the CMB formed at a wide variety of times and gives no information on the age of the whole universe.

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