General relativity is used to model the behavior of the universe during the era of cosmic microwave background radiation, a period about 380,000 years after the Big Bang when the universe became transparent to light, and the cosmic microwave background radiation was emitted, which provides a snapshot of the state of the universe at that time. General relativity is used to calculate the temperature anisotropies and polarization patterns in the cosmic microwave background radiation, which can be used to study the structure and evolution of the universe.\n
How does General relativity impact our understanding of the behavior of the universe during the era of cosmic microwave background radiation?