Which statement about the cosmic microwave background is not true?
A)Its spectrum corresponds to a temperature of just under 3 degrees above absolute zero.
B)With the exception of very small variations,it appears essentially the same in all directions in which we look into space.
C)It is the result of a mixture of radiation from many independent sources,such as stars and galaxies.
D)It is thought to be radiation that began its journey to our telescopes when the universe was about 380,000 years old.

Question

Quizplus · Accepted Answer

The statement that the cosmic microwave background is the result of a mixture of radiation from many independent sources, such as stars and galaxies, is not true. The cosmic microwave background is a remnant of the radiation left over from the Big Bang, rather than radiation from stars and galaxies.

Which Statement About the Cosmic Microwave Background Is Not True