For one weekend each year, NASA's Jet Propulsion Laboratory in Pasadena opens its doors to the public for a massive open house. This year's theme was "Worlds Beyond," and the event took place May 15 and 16.
Special features such as a 25-foot space simulator, the actual camera that flew on the Hubble Space Telescope, 3D and infrared photos, assembly and fabrication facility tours, and gliding robots in the "Robo-Dome."
If you weren't able to make it this year, check out the on-location videos via Ustream.