You Are Literally Made of Stars

A reminder from NASA that you are part of the universe.

We may never know with certainty how life came to exist in the universe, and before that, how the universe came into existence. But what we do know is that, somehow, stars were created. And then the stars created us.

Stars that supernova are responsible for creating nearly all the elements in the human body. I’m not making this up, it is widely reported to be true by planetary scientists.

For example, the calcium in our bones and teeth comes from the stars.

(CNN) 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.

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.

Stars explode. E…