Unite 2013 - Building a new universe in Kerbal Space Program

How hard can rocket science be, anyway? Creating a full-scale space flight simulation poses a number of interesting problems, like dealing with the vast scales of a solar system, maintaining a stable physics simulation and supporting player-created spaceships in the simulation. The developers of Kerbal Space Program talk about the many challenges the team faced, and the unique solutions they came up with in order to solve them. Help us caption & translate this video!