The Science Behind Asteroid Impacts | How The Universe Works

Asteroid impacts are one of the deadliest forces planet Earth has encountered and they have even driven species into extinction in the past. How exactly do asteroids interact with Earth during the event of an impact? Subscribe to Discovery UK for more great clips: http://www.youtube.com/subscription_c... Follow Discovery UK on Twitter:   / discoveryuk                 Watch Discovery UK on SkyQ and Sky+ 125, Sky Glass & Stream 138, Sky Scotland 126, Sky ROI 125, Sky Glass & Stream ROI 134, Virgin Media 177.