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How Well Do Astrophysicists Understand the Origin of Heavy Elements?
March 15, 2019
Elements heavier than iron form in supernova explosions. End of story. We can all rest now. But wait...
Where Do Gems and Precious Metals Come From?
September 7, 2011
Gold, diamonds, and other precious metals and gems... they are found close to the surface of the earth where humans can mine them and make jewelry. But they shouldn’t be there. Heavy elements should have sunk deep into the core of the Earth soon after it was formed. Wait till you hear some of the latest ideas about how precious metals and gems arrived near the surface. Maybe they shot up from the mantle. Maybe they came from outer space.