Changes
Jump to navigation
Jump to search
Line 1:
Line 1: − + + + + +
Bit about big bang nucleosynthesis
'''Nucleosynthesis''' is the process of creating atomic nuclei from pre-existing [[proton]]s and [[neutron]]s.
'''Nucleosynthesis''' is the process of creating atomic nuclei from pre-existing [[proton]]s and [[neutron]]s.
Heavier elements are believed to form inside [[star]]s, through the process of [[nuclear fusion]].
Heavier elements are believed to form mainly inside [[star]]s, through the process of [[nuclear fusion]].
The [[big bang theory]] predicts that in the early [[universe]] the [[temperature]] would have been sufficiently great for nuclear fusion to occur. It prdicts that the universe should be composed of roughly 23% [[helium]] with the majority of the rest being [[hydrogen]]<ref>http://w.astro.berkeley.edu/~mwhite/darkmatter/bbn.html</ref>. This is consistent with the known values<ref>http://hyperphysics.phy-astr.gsu.edu/hbase/astro/hydhel.html</ref>.
==References==
[[Category:Physics]]
[[Category:Physics]]
[[Category:Astronomy]]
[[Category:Astronomy]]
(username removed)