HELIUM ABUNDANCE. “Now we know that stars cannot build up the observed He abundance through nuclear reactions in their interior, and thus have to be primordial.”
https://royalsocietypublishing.org/doi/10.1098/rsta.2019.0091
HELIUM ABUNDANCE. “Now we know that stars cannot build up the observed He abundance through nuclear reactions in their interior, and thus have to be primordial.”
https://royalsocietypublishing.org/doi/10.1098/rsta.2019.0091