1912-1977. German rocket engineer who developed German military rockets (V1 and V2) during World War II, and later worked for NASA in the USA. During the 1940s his research team at Peenemunde on the Baltic coast produced the V1 (flying bomb) and supersonic V2 rockets. In the 1950s von Braun was part of the team that produced rockets for US satellites (the first, Explorer I, was launched early 1958) and early space flights by astronauts.