J-2 rocket engine

The J-2 rocket engine is a liquid-fuel engine used in the Apollo missions and Space Launch System. It burns liquid hydrogen and liquid oxygen to produce a powerful thrust, allowing rockets to escape Earth's gravity. The engine operates by mixing these fuels in a combustion chamber, creating high-pressure gases that expand through nozzles to generate thrust. Its efficient design provides the high performance needed for the upper stages of rockets to carry spacecraft into orbit or to the Moon. The J-2's reliability and efficiency made it essential for deep-space exploration missions.