Where did the gold come from?

[mooncliff]

This universe started out almost totally hydrogen with a little helium. Where did the heavier elements like gold come from?

http://www.physorg.com/news/2011-09-...ging-gold.html

And how come there is gold at the surface of the Earth? It should all have sunk to the core.

http://www.physorg.com/news/2011-09-gold.html