Precious Metals Were Brought Earth by Asteroids

According to scientists the precious metals that we see on Earth today may be largely heavenly in nature, coming from the sky billions of years ago. Back when the Earth was just forming, the materials that make up the planet were combining and differentiating into layers by weight, lighter materials floated to the surface and now make up Earth’s crust, while heavier materials such as iron sank to the planet’s interior.

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