See an original model of the first liquid-fuel rocket that Robert Goddard launched in 1926. Goddard, dubbed “The Moon Man,” was the first scientist to propose that a rocket could be launched using liquid propellants. Many of his colleagues were skeptical, but he showed them. Using gasoline and ethyl alcohol, a rocket just like this reached a height of 41 feet and traveled a distance of around 180 feet. Goddard went on to become known as the father of American rocketry.