We can trace the elements. They were forged in the centers of high-mass stars that went unstable at the ends of their lives, they exploded, scattered their enriched contents across the galaxy, sprinkled into gas clouds that then collapsed and… — Neil deGrasse Tyson Copy Share Image
“Using the standard model of elementary particles, we know how to follow the course of nuclear reactions in the standard "big bang" theory of the universe well enough to be able to calculate that the matter formed in the first… — Steven Weinberg Copy Share Image
