The Raptor Engine is a full-flow staged combustion rocket engine developed by SpaceX. It uses liquid oxygen and liquid methane as propellants, allowing for efficient performance and the potential for in-situ resource utilization on other planets, such as Mars. The engine is designed to produce high thrust and is a key component of the Starship spacecraft. Raptor engines are notable for their advanced design, which includes a unique cycle that maximizes efficiency and minimizes engine weight. Each engine can generate over 230 metric tons of thrust at sea level, making it one of the most powerful rocket engines in existence.