The nitrogen contained in our genes, the calcium in our teeth, the iron in our blood and the carbon in our apple pie were made in the cosmic kitchen that is the star. Our bodies are made up of the particles that constitute the stars. Indeed, in a very profound sense we are children of the stars.
Friday, October 24, 2008
In another great episode, Sagan goes from the very small to the very large, from atoms to red giants, from nuclear forces to gravity. In it, he poetically declares: