From early test rockets first launched in the 1920s to communication satellites of the 1950s to the reusable Space Shuttle of the 1980s, the human expansion into space is an amazing engineering feat. Successful space travel depends on rockets possessing high-enough thrust velocity to overcome the gravitational force of the Earth. The first rocket was launched in 1926 using a liquid fuel of gasoline and liquid oxygen oxidizer.
Subsequently, different fuels and oxidizers have been used in either solid or liquid form. The Space Shuttle uses liquid hydrogen as the fuel, but the launch engines use solid fuel of aluminum and ammonium perchlorate as the oxidizer with binder.