Astrophysicist Paul Sutter illuminates the origin of ancient radiation leftover from the earliest moments of the universe; the flash of the Big Bang is still with us.<br /><br /><br />-<br />More at: https://www.space.com<br />Facebook → https://www.facebook.com/space.com<br />Instagram → https://www.instagram.com/spacedotcom/<br />Twitter → http://twitter.com/spacedotcom<br />Pinterest → http://www.pinterest.co.uk/spacedotcom