Intressant!

Från en kursbok:
"It is the scarcity of neutrons relative to protons that explains why Big Bang Nucleosynthesis was so incomplete, leaving three-fourths of the baryons in the form of unfused protons. 

A neutron will fuse with a proton much more readily than a proton will fuse with another proton. When two protons fuse to form a deuterium nucleus, a positron must be emitted (to conserve charge).

This means that an electron neutrino must also be emitted (to conserve electron quantum number)."

Det är väldigt lätt att kombinera kärnfysik och statistisk mekanik med kosmologi<3