The cosmic background radiation appears compatible with a blackbody source at what temperature?
A)0.000 3 K
B)0.03 K
C)3 K
D)300 K

Question

Quizplus · Accepted Answer

The cosmic background radiation appears compatible with a blackbody source at a temperature of 3 K. This temperature is known as the cosmic microwave background temperature, which is the temperature at which the radiation left over from the Big Bang has cooled down to today. It is also one of the pieces of evidence for the Big Bang theory.

The Cosmic Background Radiation Appears Compatible with a Blackbody Source