quote of the day

Every atom in your body came from a star that exploded. And the atoms in your left hand probably came from a different star then your right hand. It really is the most poetic thing I know about physics; you are all stardust. You couldn’t be here if stars hadn’t exploded, because the elements - the carbon, nitrogen, oxygen, iron, all things that matter for evolution at the start of life - weren’t created at the beginning of time. They were created in the nuclear furnaces of stars, and the only way for them to get into your body is if those stars are kind enough to explode…. The stars exploded so that you could be here today.