Observations of the tiny irregularities in the cosmic microwave background support the idea that the Universe...
A) must contain about 5 times more dark matter than regular matter.
B) does not contain dark energy.
C) must contain hidden pockets of antimatter.
D) must be one of many "island universes".

Question

Quizplus · Accepted Answer

Observations of the cosmic microwave background indicate that the Universe's total mass-energy content is about 5 times more dark matter than regular matter, supporting the existence of dark matter.

Observations of the Tiny Irregularities in the Cosmic Microwave Background