JPL's Space Simulation Chamber

NASA’s JPL has a space simulation chamber that is used to test-run rovers that are soon to be launched into space.  Depending on the rover’s destination, the space simulation chamber will simulate conditions of the rover’s destination planet, ranging in temperatures from -300˚ to 230˚ Fahrenheit.  The chamber mimics extreme temperatures in order to make sure the spacecraft can withstand both severely boiling and freezing temperatures.  Every spacecraft built at JPL goes through the simulation chamber before it is launched into space to ensure the craft is built at the most optimal state to withstand irregular and extreme conditions.  Almost all the space crafts that have been through the space simulation chamber have undergone situations that have caused the engineers to learn something new, which then compelled them to improve the design of the rover in order to work better.