The Universe Inside You: How Your Body Is Made of Stardust

Contents of the galaxy are inside of us.

Did you know that every atom in your body once belonged to a star? It sounds like science fiction, but it’s true!

Billions of years ago, stars exploded in massive supernovas, scattering elements like carbon, oxygen, and iron across the universe. These elements eventually formed new stars, planets, and—you.

The iron in your blood, the calcium in your bones, and the carbon in your skin all came from space. Scientists call this “stellar nucleosynthesis,” proving that humans are literally made of stardust.

So, the next time you look at the night sky, remember: you’re not just looking at the stars—you ARE the stars.

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