Why can't we see radiation produced during the first 300,000 years of the history of the universe?
A)It was all absorbed and destroyed soon after it was emitted
B)It hasn't reached us yet
C)It has been deflected by black holes
D)It passed by our part of the universe a few billion years ago

Question

Quizplus · Accepted Answer

During the first 300,000 years of the universe, the universe was filled with a dense, hot plasma, and radiation emitted would have been almost immediately absorbed and destroyed by the charged particles in the plasma. It was only after this time that the universe expanded and cooled enough for the plasma to recombine into neutral atoms and the radiation to travel freely as the cosmic microwave background radiation.

Why Can't We See Radiation Produced During the First 300,000