Our whole universe was in a hot, dense state But nearly 14 billion years ago, expansion started Wait... The Earth began to cool, the outer troughs began to drill Neanderthals developed tools, we built a wall We built a pyramid! Science is truly unraveling the mystery That all started with a big bang Hey! Since the dawn of man, it's really not that long Every galaxy was formed in less time than it takes to sing this song In a fraction of a second, the elements were made The bipeds stood up straight, the dinosaurs all met their fate They tried to read, but they were late, they all died They froze, they're out, stop! The oceans had been geo-sea-award And all of the ascent and motion by the same big bang It all started with a big bang! It is expanding ever outward, but one day It will all start to go the other way Collapsing ever inward, we won't be here, it won't be heard Our best and brightest figure, they don't make it even bigger Australopithecus will really happen, sick of us debating how we're here They're catching deer, we're catching viruses Religion and astronomy, Descartes, Deuteronomy It all started with a big bang Music and mythology, Einstein and astrology It all started with a big bang It all started with a big bang!