Multiple Choice
How was MOST of the helium in the universe created?
A) by nuclear reactions in the cores of stars and then thrown out into space by supernovae
B) by high-energy processes during the collapse of pregalactic clouds during the formation of galaxies
C) by nuclear reactions during the first 3 minutes following the Big Bang
D) by the collision of cosmic rays with hydrogen nuclei in interstellar gas clouds
Correct Answer:
Verified
Correct Answer:
Verified
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