Wernher von Braun was a German-American aerospace engineer and space architect, best known for his role in developing rocket technology. Born on March 23, 1912, in Germany, he initially worked on the V-2 rocket during World War II. After the war, he moved to the United States, where he became a key figure in the NASA space program. At NASA, von Braun was instrumental in the development of the Saturn V rocket, which enabled the Apollo 11 mission to land humans on the Moon in 1969. His contributions to space exploration have made him a significant figure in both American and global aerospace history.