How does the energy of the cosmic microwave background compare to the energy radiated by all the stars and galaxies that ever existed?

Question

Quizplus · Accepted Answer

The cosmic microwave background (CMB) radiation, which is the afterglow of the Big Bang, contains about ten times more energy than the cumulative light emitted by all the stars and galaxies that have ever existed. This is because the CMB fills the entire universe and represents the energy released during the universe's earliest moments, whereas the light from stars and galaxies, although significant, is more localized and has been accumulating over a much shorter period of time.

How Does the Energy of the Cosmic Microwave Background Compare