How hot was the universe at time zero?
A) 2.73 K
B) 5, 800 K
C) 16, 000 K
D) 10³² K
E) We have no theory capable to addressing this question.
Correct Answer:
Verified
Q23: The majority of dark matter is probably
Q29: Concerning dark energy, we do know:
A)that it
Q31: Before about 50,000 years after the Big
Q33: Physicists have detected hot dark matter particles
Q35: At this time, the universe is:
A)radiation dominated.
B)quark
Q39: The crossover point from radiation to matter
Q40: When new particle pairs are being created
Q41: The period from about 100 seconds up
Q56: How do astronomers define the "superforce"?
A)a force
Q73: About how hot was the Big Bang
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