Which of the following observations motivated the suggestion that the early universe experienced a brief period of extremely rapid inflation?
A)The extreme isotropy of the cosmic background radiation
B)The large number of black holes in the universe
C)The fact that some globular clusters are older than the universe
D)The presence of helium in the universe

Question

Quizplus · Accepted Answer

The extreme isotropy (uniformity) of the cosmic background radiation suggested that the universe had to expand very rapidly in the early stages to allow all regions of the universe to achieve the same temperature. This idea is consistent with the theory of cosmic inflation, proposed to explain the observed isotropy.

Which of the Following Observations Motivated the Suggestion That the Early