If equal amounts of matter and antimatter had survived, the universe would:

  1. be twice as bright
  2. contain mostly radiation and no galaxies
  3. look the same
  4. be made of antimatter stars
Answer

B) contain mostly radiation and no galaxies

They would have annihilated. SLO P-11-F-26 · Knowledge

Physics MCQ · More Nuclear and Particle Physics MCQs · Practise