Dr. Arno Penzias, the Nobel prize-winning physicist who helped find evidence to confirm the Big Bang theory, has died at 90. Penzias fled Nazi Germany before joining his colleague Dr. Robert Wilson to settle a long scientific debate over how the universe was born. Sunday TODAY’s Willie Geist remembers a life well lived. » Subscribe to TODAY: youtube.com/@TODAY About: TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: today.com Find TODAY on Facebook: facebook.com/today Follow TODAY on Twitter: twitter.com/TODAYshow Follow TODAY on Instagram: instagram.com/todayshow » Stream TODAY All Day: t...