Calciul din oase și oxigenul pe care îl respirăm în fiecare moment fac parte din Univers ☝🏻👨🏼‍⚕️

Let's talk about how we are made, okay? Because there are stuff that we already know, I presume, like how the mass was formed. Yeah. And how all of these molecules we are from are formed. Carl Sagan calls it stardust.

Yeah, star stuff.

So we have the iron molecule in, uh, in our blood, and the only way the iron is formed is in the center of the star. So I have inside of me molecules from the center of another star.

Yeah, close to the Big Bang. In the first few minutes in the history of the universe, hydrogen and helium are formed. So basically hydrogen and helium and a little bit of lithium. And I think a tiny bit of beryllium as well. So there's the really light ones, right? There isn't any carbon after the, for the first few hundred million years or so in the life of the universe. There's no oxygen. There's no iron, as you said. So where does it come from? Um, it turns out that we now understand that those heavier elements are made in stars. Right, that's where they come from. There isn't any after the Big Bang, and there isn't any carbon or oxygen or iron until generations of stars have lived and died. And that's where it gets made. So yeah, so that's what Carl Sagan meant. We are star stuff, or stardust, as he used to say. And it's true.