The Secret of the Dark Side of the Moon

Earth's gravity is so strong we only see one side of the orbiting moon. Modern exploration to the mysterious dark side revealed dramatic surprises and revised theories about the moon's formation. Catch new episodes of HOW THE UNIVERSE WORKS Tuesdays at 10/9c on Science! | http://science.discovery.com/tv-shows/how-the-universe-works/ Watch full episodes: http://bit.ly/HTUWFullEpisodes Subscribe to Science Channel: http://www.youtube.com/subscription_center?add_user=sciencechannel Check out SCI2 for infinitely awesome science videos. Every day. http://bit.ly/SCI2YT Download the TestTube app: http://testu.be/1ndmmMq