Gold creation: Space explosions could explain how all the origins of gold on Earth.

All of Earth’s Gold May Have Come From Dead Star Collisions (VIDEO)

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July 19 2013 2:03 PM

All of Earth’s Gold May Have Come From Dead Star Collisions (VIDEO)

Gold isn’t just rare on Earth; it’s rare in the universe.

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Aug. 28 2015 12:31 PM What Happened at Slate This Week? International affairs writer Joshua Keating on what to read to understand the apparently permanent slowdown of the Chinese economy.