'Why We Are Made of Star Stuff' (IMAGE)

American Chemical Society

'Why We Are Made of Star Stuff'

Caption

As Carl Sagan famously said, 'We are made of star stuff.' It's a mind-boggling thought, but what exactly did he mean? Ahead of Sagan's birthday on Nov. 9, Reactions teamed up with the American Association of Chemistry Teachers and best-selling author Sam Kean to explain the chemistry behind this iconic quote. Watch our latest episode to find out how many of the atoms that make up you (and everything else) were forged in the nuclear cores of stars billions of years ago.

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The American Chemical Society

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