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.
Correct Answer:
Verified
Correct Answer:
Verified
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