Stopping an Asteroid Apocalypse | How the Universe Works

New discoveries and cutting-edge tech reveal just how close we are to an asteroid apocalypse and what it would take for the world's leading space agencies to stop it. Stream Full Episodes of How the Universe Works: https://www.sciencechannel.com/tv-shows/how-the-universe-works/ Subscribe to Science Channel: http://bit.ly/SubscribeScience Like us on Facebook: https://www.facebook.com/ScienceChannel Follow us on Twitter: https://twitter.com/ScienceChannel Follow us on Instagram: https://www.instagram.com/ScienceChannel/