What is one of the things that have been learned from measurements of the fluctuations in the cosmic background radiation (CBR)?
A)The extent to which foreground objects block the CBR
B)Space is very nearly flat
C)The CBR was produced long after the first stars formed
D)The CBR was emitted primarily by galaxies

Question

Quizplus · Accepted Answer

One of the things learned from measurements of the fluctuations in the cosmic background radiation (CBR) is that space is very nearly flat. This is based on the observations that the temperature fluctuations in the CBR are consistent with the predictions of the inflationary model of the universe, which requires that space be almost perfectly flat.

What Is One of the Things That Have Been Learned