There are fluctuations in the CMB due to the fact that clumps of dark matter had already begun to form in the universe when the light from the CMB was given off.

Question

Quizplus · Accepted Answer

The clumps of dark matter affected the distribution of matter and energy in the early universe, which in turn led to fluctuations in the CMB. These fluctuations provide important clues about the structure and evolution of the universe.

There Are Fluctuations in the CMB Due to the Fact