Tyson collapses the distance between the personal and the cosmic. He’s not speaking metaphorically, he means it literally. The iron in your blood was forged in a dying star. The water in your cells has cycled through oceans, clouds, and glaciers. The carbon in your bones was once part of something, or someone, else entirely. Healing, in this light, isn’t just personal. It’s almost ecological. You are never truly separate.