Liquid-fuel rockets

The introduction of liquid fuel and carrying its own oxidizer made rockets more powerful and controllable. Goddard's first rocket flew 200 ft into the air, and marked the beginning of modern rocketry and expanded human reach beyond the atmosphere.
 Robert Hutchings Goddard United States 1926 Liquid-fuel rockets

The introduction of liquid fuel and carrying its own oxidizer made rockets more powerful and controllable. Goddard's first rocket flew 200 ft into the air, and marked the beginning of modern rocketry and expanded human reach beyond the atmosphere.