Wednesday, March 13, 2024

Fred Hoyle (1915-2001)

https://en.wikipedia.org/wiki/Fred_Hoyle

Stellar nucleosynthesis


元素的誕生

Stellar nucleosynthesis is the creation (nucleosynthesis) of chemical elements by nuclear fusion reactions within stars. Stellar nucleosynthesis has occurred since the original creation of hydrogenhelium and lithiumduring the Big Bang. As a predictive theory, it yields accurate estimates of the observed abundances of the elements. It explains why the observed abundances of elements change over time and why some elements and their isotopes are much more abundant than others. The theory was initially proposed by Fred Hoyle in 1946,[1] who later refined it in 1954.[2]