What is the temperature of the Cosmic Microwave Background (CMB)?Group of answer choices70 Farenheit0 Celsius100 Kelvin3 Kelvin

The photons in the CMB were emitted when the universe was about 1/1100 of its current size. What was the temperature of the universe at that time? (The present day temperature of the CMB is 2.7 K.)

What is CMB?a.Leftover heat from the Big Bangb.Radiation emitted by our Sunc.Shockwave from the death of a stard.Molecular cloudse.All of the abovef.None of the above

The average temperature of the present universe is 2.7 K. What was the cosmic scale factor of the universe when the average temperature was 270 K?

what the CMB is and how it was discovered.

If the temperature in Kelvin is 300K, what would be the temperature in Celsius?