If there were more baryons in the universe immediately after the Big Bang, then the abundance of __________ in stars and galaxies would be higher.
A) hydrogen
B) carbon
C) uranium
D) helium
E) oxygen

Question

Quizplus · Accepted Answer

The abundance of helium would be higher because more baryons would lead to more nuclear fusion during the Big Bang nucleosynthesis, primarily forming helium from hydrogen.

If There Were More Baryons in the Universe Immediately After