Exploding stars created the calcium in our bones and teeth, study says

By Ashley Strickland, CNN

Updated 10:02 AM ET, Wed August 5, 2020

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An artist's illustration, left, helps visualize the details of an unusual star system, GW Orionis, in the Orion constellation. The system's circumstellar disk is broken, resulting in misaligned rings around its three stars.
Photos: Wonders of the universe
An artist's illustration, left, helps visualize the details of an unusual star system, GW Orionis, in the Orion constellation. The system's circumstellar disk is broken, resulting in misaligned rings around its three stars.
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This is a simulation of two spiral black holes that merge and emit gravitational waves.
Photos: Wonders of the universe
This is a simulation of two spiral black holes that merge and emit gravitational waves.
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This artist's illustration shows the unexpected dimming of the star Betelgeuse.
Photos: Wonders of the universe
This artist's illustration shows the unexpected dimming of the star Betelgeuse.
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This extremely distant galaxy, which looks similar to our own Milky Way, appears like a ring of light.
Photos: Wonders of the universe
This extremely distant galaxy, which looks similar to our own Milky Way, appears like a ring of light.
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This artist's interpretation shows the calcium-rich supernova 2019ehk. The orange represents the calcium-rich material created in the explosion. Purple reveals gas shed by the star right before the explosion.
Photos: Wonders of the universe
This artist's interpretation shows the calcium-rich supernova 2019ehk. The orange represents the calcium-rich material created in the explosion. Purple reveals gas shed by the star right before the explosion.
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