Rockets were first introduced in 1232 AD Therefore, they have a very long and extensive history. At first rockets were used only as weapons, but already in 1806 they began to be used for space travel. The first rockets produced were made in China. It was during the time black powder was discovered. Several years later, the world's largest rocket was built, which took 18 months to complete. Many of us don't think about all the work that went into creating rockets. From the tiny weapons used to fight enemies, to the 300-foot tall device that sends people into space, rockets have forever changed history and the way space travel developed. A rocket is a missile, spacecraft, aircraft, or other vehicle that gets thrust from a rocket engine. Rocket engine exhaust consists entirely of propellants carried inside the rocket before use. Rockets are powered by engines and the engines work on action and reaction. Pushing the rocket forward and then firing the exhaust backwards causes the rocket to fly through the air extremely quickly. Although relatively inefficient for low-speed use, the rockets are relatively light and powerful, capable of generating large accelerations and reaching extremely high speeds with reasonable efficiency. Rockets are not dependent on the atmosphere and work very well in space. Unlike regular engines, rockets carry their own supply of oxygen to burn fuel. As rockets have gotten bigger and bigger, engines have gotten bigger and bigger too. The world's largest rocket, which took 18 months to build, was NASA's Saturn V model. Werner von Braun designed this rocket. He developed a rocket that put the first group of men on the moon in July 1969. Rocket technology was initially k... half of paper... influenced by the Mongol invasions of recent years. centuries. Chemical rockets are the most common type of rocket and typically create their exhaust by burning the rocket's propellant. Chemical rockets store a large amount of energy in an easily released form and can be very dangerous. However, careful design, testing, construction and use minimize the risks. In space there are better ways of propulsion. Many of them travel many more kilometers, but are slower and require an electrical power source. Once we begin to industrialize space, we will surely assemble large “space trucks” in low Earth orbit to carry payloads into space much more efficiently, using something other than chemical rocketry. However, for people who need to be transported quickly, we can assume that we will use chemical rocketry in the first stage of large-scale space development..