The Space Shuttle launch is one of the most critical and dangerous phases of the mission. The Shuttle is powered by three main engines and two solid rocket boosters. The boosters provide the majority of the thrust needed to lift the Shuttle into orbit. The main engines are used to control the Shuttle's trajectory and to provide additional power during ascent.

Phase 2: On-orbit operations

Once in orbit, the Space Shuttle can perform a variety of tasks, including deploying satellites, conducting scientific experiments, and servicing the Hubble Space Telescope. The Shuttle can also be used to build or repair space stations.

Phase 3: Re-entry and landing

The final phase of the Space Shuttle mission is re-entry and landing. The Shuttle begins its descent by firing its retro rockets. These rockets slow the Shuttle down and cause it to lose altitude. The Shuttle then enters the Earth's atmosphere, where it experiences extreme heat and pressure. The Shuttle's heat shield protects it from the heat and allows it to land safely.