According to the theory of cosmic inflation, at what time in the history of the universe did inflation occur?
A) at the time that the cosmic background radiation formed
B) at a tiny fraction of the first second, but not quite at the very beginning of the big bang
C) at the very beginning of the big bang
D) around the third or fourth second
E) around the third or fourth minute
Correct Answer:
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Q29: Dark energy
A) has never been directly observed
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A) all forces are
Q32: The cosmic microwave background is
A) caused by
Q33: One piece of evidence supporting the theory
Q34: Dark energy is made of
A) invisible electromagnetic
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