3 ms·
Astrophysicists consider any element heavier than Hydrogen or Helium a metal. :) https://en.wikipedia.org/wiki/Metallicity https://en.wikipedia.org/wiki/Metall
by basementcat 7y ago
Astrophysicists consider any element heavier than Hydrogen or Helium a metal. :)
https://en.wikipedia.org/wiki/Metallicity https://en.wikipedia.org/wiki/Metallicity