The Big Bang is when many think the universe started and time itself began. But what clues can we discover about this ultimate genesis of everything? And can we ever know what existed before the Universeโs birthday? With stunning animation based on space telescope images, NOVA explores infant galaxies filled with violent blue stars that formed just a few hundred million years after the Big Bang. Before thatโbefore the coming of visible light itselfโstretch the โcosmic Dark Ages.โ But scientists havenโt stopped there; instead, theyโve come up with an incredible theory for what happened billionths of a billionth of a second from the universeโs birth. If theyโre right, weโre on the brink of understanding more than we could ever have hoped about our cosmic origins.