Something The Size of Pluto Once Smashed Into Mars

#HowTheUniverseWorks This impact would make the one that killed the dinosaurs look like a pebble. It shook Mars to its core and changed it forever. Full Episodes Streaming FREE on Science GO: https://www.sciencechannelgo.com/how-the-universe-works/ Subscribe to Science Channel: http://bit.ly/SubscribeScience Check out SCI2 for infinitely awesome science videos. Every day. http://bit.ly/SCI2YT Join Us on Facebook: http://www.facebook.com/ScienceChannel Follow Us on Twitter: http://www.twitter.com/sciencechannel