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Harvard-Smithsonian Center for Astrophysics

Earth's Gold Came from Colliding Dead Stars

17 Jul 2013, 17:11 UTC
Earth's Gold Came from Colliding Dead Stars

July 17, 2013: We value gold for many reasons: its beauty, its usefulness as jewelry, and its rarity. Gold is rare on Earth in part because it's also rare in the universe. Unlike elements like carbon or iron, it cannot be created within a star.

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