The Temperature of the CMB Is Hotter on One Side

question 77

Multiple Choice

The temperature of the CMB is hotter on one side of the sky than on the other by approximately 3 mK. What does this tell us?

• A) The Earth has a peculiar velocity of about 8,000 km/s with respect to the CMB.
• B) The Earth has a peculiar velocity of about 400 km/s with respect to the CMB.
• C) The Earth is near the center of the universe's expansion, but not exactly at the middle.
• D) The universe is expanding faster on one side of us than the other.
• E) The universe is homogeneous but not isotropic.

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Definitions:

Manager

An individual responsible for directing, controlling, and administering an organization or group, overseeing tasks, and making decisions.

Confirmation Error

The tendency to seek confirmation for what is already thought to be true and not search for disconfirming information.

Selective Perception

The tendency to define problems from one’s own point of view.

Preexisting Opinion

A belief or judgment formed before obtaining full or certain knowledge, often influencing how new information is interpreted.