If a Region of the Universe During the Big Bang

question 84

Multiple Choice

If a region of the universe during the big bang is the pink/black colors and a region of the universe today shows the sky-blue galaxies and stars, what are the yellow squiggly lines and when did they occur?

• A) photons, matter-antimatter annihilation
• B) photons, CMB
• C) hydrogen fusion to helium, era when neither matter nor radiation dominates
• D) gamma rays, dark age

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