The calcium in our bones and teeth likely came from stars exploding in supernovas and scattering this mineral across the universe in massive quantities, according to a new study
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We truly are made of star stuff, as famed astronomer Carl Sagan once said. In fact, half of the calcium in the universe likely came from calcium-rich supernovae. But these explosions have turned out to be incredibly rare events that scientists have had difficulty observing and analyzing, so they weren't sure how the calcium was created.Explosions and mergers of stars are also known to create other heavy elements, like gold and platinum. But the calcium has presented more of a mystery.
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