STS-135 Space Shuttle Atlantis Up-Close I've worked on that gang plank, the final path of steel to the shuttle's Astronauts entry. Sandblasting and spraying zinc. Most memorable moments and I feel very blessed for the opportunity to do so. You don't have to be a rocket scientist to experience great things kids. Hard work and determination will never let you down.
The ET (External Tank) is the largest element of the space shuttle, and when loaded, it is also the heaviest. It consists of three major components: the forward liquid oxygen (LOX) tank an unpressurized intertank that contains most of the electrical components the aft liquid hydrogen (LH2) tank; this is the largest part, but it is relatively light, due to hydrogen's very low density. Those 2 chemicals funnel out of the engine and when combined energy is released.