How can you trace minerals from supernovas to our teeth and bones? Isn’t the calcium that make up our bones produced during our gestation? How is that connected to a supernova from potentially millions of years ago?
In: Biology
>Isn’t the calcium that make up our bones produced during our gestation?
The calcium us PUT there during gestation, but that’s not where the Ca comes from. Ca comes from stellar nucleosynthesis and supernovae. The heavier elements come from neutron star mergers and the subsequent massive explosions that occur from them.
The elements just exist and are here from when Earth formed from dust floating around in a nebula, they’re just exchanged and recycled.
I like this video about where stuff comes from: [https://www.youtube.com/watch?v=lInXZ6I3u_I](https://www.youtube.com/watch?v=lInXZ6I3u_I)
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