We have millions of cars, planes, rebar, jewelry, bullets, boats, phones, wires, etc. How is there still metal being made? Are we projected to run out anytime soon?
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When stars die, they explode and create giant clouds of various elements. Iron is one of the most common elements formed in the final stages of a star’s life and the moment of its death.
Our solar system formed billions of years later within the nebula created by such a dead star, meaning there is a *LOT* of iron in the solar system and within the Earth in particular. The entire core of the planet is made of nickel and iron.
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