Einstein's mass-energy equivalence () is important to the first ...

[viki]

Einstein's mass-energy equivalence () is important to the first phases of the big bang in explaining how____.
 
  a. gamma ray photons create matter and antimatter
 b. stable protons and neutrons can exist below a certain temperature
  c. antimatter can exist
 d. matter became more prevalent than antimatter
 e. the Universe expanded rapidly

Question 2

Astronomers refer to the dark center of a sunspot as a(n) ____
 
  a. spicule
 b. flare
 c. penumbra
  d. umbra
 e. eye

[atrochim]

Answer to Question 1

a

Answer to Question 2

d

[viki]

Thanks for the timely response, appreciate it

[nothere]

YES! Correct, THANKS for helping me on my review