How were heavy elements formed and how did they get to Earth?

1 Answer

Elements heavier than Iron is made in supernova explosions of stars.


Just after big bang there were only Hydrogen end Helium the universe.Other elements were cooked up in the core of stars during fusion reaction.But elements heavier than Iron were made in supernovas.Our solar system and sun is a third generation star and its heavy elements came to earth from a past supernova which happened before the formation of earth,.