A multi-stage rocket is a type of launch vehicle designed to carry payloads into space. It consists of two or more stages, each with its own engines and fuel. As the rocket ascends, stages are jettisoned when their fuel is depleted, reducing weight and allowing the remaining stages to continue propelling the payload. This design improves efficiency and performance, enabling rockets to reach higher altitudes and speeds. Notable examples of multi-stage rockets include the Saturn V, which was used during the Apollo missions, and the Space Shuttle, which utilized solid rocket boosters alongside its main engines.