Wernher Magnus Maximilian Freiherr von Braun was a German, American aerospace engineer, and space architect. He was the leading person in the development of rocket technology in Germany and a pioneer of rocket and space technology in the United States.He accomplished many things never done before but it came with hardships along the way.

https://www.famousscientists.org/wernher-von-braun/
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https://www.britannica.com/biography/Wernher-von-Braun