Starting with the one simple principle that has powered every rocket that's ever flown, Professor Chris Bishop launches through an explosive journey to the moon and back. Click here to subscribe for more science videos: http://bit.ly/RiSubscRibe This lecture from the Cambridge science festival is packed with demonstrations of the science that sends people into space. A family-filled lecture theatre sees flying projectiles, the fiery combustion of energetic propellants, and the impressive roar and flame of a hybrid rocket engine. Other great videos from Chris Bishop: The science of fireworks! https://www.youtube.com/watch?v=rmtK2BgmGCw Explosive science https://www.youtube.com/watch?v=uFQdcKJUijQ Chemical curiosities: https://www.youtube.com/watch?v=ti_E2ZKZpC4 The Ri is on Twitter: http://twitter.com/ri_science and Facebook: http://www.facebook.com/royalinstitution and Tumblr: http://ri-science.tumblr.com/ Our editorial policy: http://www.rigb.org/home/editorial-policy Subscribe for the latest science videos: http://bit.ly/RiNewsletter