This illustrative poster is based on one of my favorite quotes from Carl Sagan's Cosmos.
"The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff."
It's a remarkable thing to think about because whether or not we are alone in the universe as life forms, we are unique in the sense that we are the universe experiencing itself, albeit for an extremely brief period of time. We are the universe manifest.