Studies of the cosmic background radiation suggest that matter in the early universe
A) was uniformly distributed.
B) had small irregularities that grew into today's galaxies.
C) had large irregularities that grew into today's galaxies.
D) formed spiral arms like those in today's galaxies.

Question

Quizplus · Accepted Answer

The cosmic background radiation shows small temperature fluctuations across the sky, indicating small irregularities in the density of matter in the early universe. These density fluctuations eventually grew through gravity and became the galaxies and cosmic structures we observe today.

Studies of the Cosmic Background Radiation Suggest That Matter in the Early