Space shuttles are reusable spacecraft designed to carry humans and cargo into space. The first space shuttle, Columbia, was launched in 1981. Shuttles have been used for various missions, including satellite deployment, space station construction, and scientific research.

How Space Shuttles Work:

1. Launch:

- The space shuttle is launched into space using a rocket called the Space Shuttle Solid Rocket Booster (SRB).

- The SRBs burn solid fuel and provide thrust to lift the shuttle off the ground. They are jettisoned after they burn out.

- The shuttle's main engines also use liquid hydrogen and liquid oxygen to generate thrust.

2. Orbiting:

- Once the shuttle reaches space, it enters orbit around Earth.

- The shuttle uses its orbital maneuvering system (OMS) engines to adjust its position and altitude in orbit.

3. Mission Activities:

- During its mission, the shuttle can perform various tasks, such as deploying satellites, conducting experiments, and servicing spacecraft.

- Astronauts on board the shuttle can use the robotic arm to manipulate objects in space.

4. Re-entry:

- When the shuttle is ready to return to Earth, it performs a controlled re-entry into the atmosphere.

- The heat generated by friction with the atmosphere causes the shuttle's outer layer to glow, producing a fiery re-entry trail.

- The shuttle uses its aerodynamic design and control surfaces to maneuver during re-entry.

5. Landing:

- The shuttle lands on a designated runway at a spaceport.

- The landing is similar to an airplane landing, but the shuttle uses a parachute to slow down before touchdown.

6. Post-Landing:

- After landing, the shuttle undergoes inspections and maintenance to prepare it for its next mission.

Decommissioning:

The Space Shuttle program was retired in 2011. Its shuttles, Columbia, Challenger, Discovery, Atlantis, and Endeavour, are now on display at various museums across the USA.