Made of Stardust: Dead Stars Within

You are literally walking around with pieces of dead stars inside your body right now.

It sounds like a sci-fi movie, but it is actually just physics. When the universe

started with the Big Bang, it was mostly just floating gas. But stars act like

giant pressure cookers, smashing atoms together to create heavy elements like carbon and iron.

When a massive star dies, it explodes in a supernova, blasting that new

material across the galaxy. That dust eventually clumped together to form Earth.

So the iron in your blood was forged in the center of a burning star billions of years ago.