Question

What is cosmic background radiation? What conclusion do scientists draw about the universe, based on their observations of cosmic background radiation? Write 2 - 3 sentences to present your response.

Answer 1

iirc the presence of cosmic background radiation helps substantiate the idea that the universe began with an explosion of energy

Answer 2

after a bit of research: the big bang released large quantities of radiation, then the expansion of the universe shifted this radiation into lower frequencies and temperatures, radiation that now permeates large stretches of the universe

so the main idea is that the presence of cosmic background radiation helps support the bbt