Goddard quickly began to work on plans for bigger rockets. During the Nineteen-Thirties, he tested his rockets at a research center in Roswell, New Mexico. He tested the first rocket controlled by electricity. The control equipment was three-hundred meters from the place of launching. He also tested the first rocket controlled by a gyroscope.
Gyroscopes help keep rockets aimed in the right direction.
Goddard did all his work in the United States, yet his work became known around the world. Scientists in Germany used his ideas to help build the V-Two rocket that was used in World War Two. During World War Two, Goddard helped the United States Navy develop some rocket motors and ways to launch jet planes. He continued work he had begun at the end of World War One that led to the bazooka, a weapon that fires small rockets. He was sixty-three years old.