Many of the small temperature fluctuations in the cosmic microwave background are a result of
A) galaxy formation.
B) symmetry breaking.
C) sound waves.
D) polarization.

Question

Quizplus · Accepted Answer

The small temperature fluctuations in the cosmic microwave background are primarily due to sound waves propagating through the early universe. These sound waves are the result of pressure differences that arose as matter and radiation interacted in the early cosmos.

Many of the Small Temperature Fluctuations in the Cosmic Microwave