Almost every atom in your body heavier than hydrogen was forged inside stars that died long before the Sun was born, which means the iron in your blood and the calcium in your bones are quite literally the remains of dead stars

Almost every atom in your body heavier than hydrogen was made by a star: inside one during its life, in the explosion that ended it, or in the collision of the dense remnants stars leave behind. Most of that material formed before the Sun and its planets did. The iron in your blood and the [...] The post Almost every atom in your body heavier than hydrogen was forged inside stars that died long before the Sun was born, which means the iron in your blood and the calcium in your bones are quite li