Different stars, even..

OK, so of course I knew the first bit, and have told my children about it (although I'm not entirely sure they remember), but I didn't know the second part (about the different stars):

A theoretical physicist, Krauss proclaimed in a recent talk: "Every atom in your body came from a star that exploded, and the atoms in your left hand probably came from a different star than your right hand. It really is the most poetic thing I know about physics: You are all stardust."