Our daily life Internal Combustion Engines used in cars & bikes can be cooled by air & water or coolant circulating around it. But what about rocket engines ? How rocket engines cooling system work ?

The engines of rocket heat up upto 6000°C. At this temperature, the metals would become so hot that they would melt & even some of them would vaporise. Circulating water or a normal coolant around it wasn’t going to help. Finally,  rocket scientists have to take the engine cooling to a whole new level. more “How rocket engines cooling system work ?”