Grandma pulled Yuna onto her lap and pointed out the window at the stars.
“Yuna, see those stars? You’re actually made of the exact same stuff they are.”
“No way, I’m a person. I’m not a star.”
“Listen. A very long time ago, when this universe had just begun, there was only hydrogen and helium, the two simplest things there are.”
“So where did everything else come from?”
“It was made inside stars. Stars crush those simple things together with incredible heat and pressure, and out comes something new, carbon, oxygen, iron, heavier things that didn’t exist before.”
“So a star is kind of like a cook?”
“That’s exactly right. And when a star finally reaches the end of its life, some of them explode in an enormous burst, scattering everything they ever cooked up across the whole universe.”
“Doesn’t exploding mean it all disappears?”
“It doesn’t disappear, it just spreads out. Those scattered pieces drift for a very long time, clumping together bit by bit, sometimes becoming new stars, sometimes becoming planets…”
“And then?”
“And every once in a while, those pieces gather somewhere like Earth, and eventually, they become someone like you.”
“Really? So there are old star pieces inside my body too?”
“Exactly that. The calcium in your bones, the iron in your blood, the oxygen you breathe, all of it was left behind by some star that exploded a very long time ago.”
“So I’m made of star pieces too.”
“That’s right. Scientists have a phrase for it, they say ‘we are made of star stuff.’ Every atom inside you was once shining inside a star.”
“So will those stars become someone someday too?”
“They might. That’s how the universe works, spinning around and around, always making something new.”
Yuna looked back up at the stars through the window. Somehow, they looked a little different now.
“Everything you touch tonight, every atom inside you, was once born inside a star.”
Your Turn Now
Tonight, share with someone what you remember.
- What were the simplest things that existed when the universe began?
- Where do heavy elements like carbon and iron get made?
- What happens to those materials when a star explodes?
(Check when ready: 1. Hydrogen and helium. 2. Inside stars. 3. They scatter across the universe and eventually form new stars, planets, and even our bodies.)
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