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/