Which of the following statements about the Dark Ages of the universe is FALSE?
A) The first stars began forming during the Dark Ages.
B) The end of the Dark Ages coincided with reionization.
C) The Dark Ages lasted from 200 to 600 million years after the Big Bang.
D) During the Dark Ages, photons could travel freely through the universe.
E) Recombination occurred before the Dark Ages.

Question

Quizplus · Accepted Answer

During the Dark Ages, photons could not travel freely because the universe was filled with neutral hydrogen, which absorbed photons. It was only after reionization that photons could travel freely.

Which of the Following Statements About the Dark Ages of the Universe