Why is the size distribution of temperature fluctuations on the cosmic microwave background useful to astronomers?

Question

Quizplus · Accepted Answer

The size distribution of temperature fluctuations on the cosmic microwave background (CMB) is crucial for astronomers because it allows them to make precise measurements of various cosmological parameters, including the density of dark energy. Dark energy affects the expansion rate of the Universe, and its properties can be inferred by studying the CMB's temperature fluctuations and their distribution across the sky. These fluctuations reflect the density variations in the early Universe, which in turn influence the Universe's expansion and structure formation.

Why Is the Size Distribution of Temperature Fluctuations on the Cosmic