Houston, TX - File photo -- Early portrait of Neil A. Armstrong, Commander of Apollo 11 Lunar Landing Mission taken in 1964.  Apollo 11 was Armstrong's second and final trip to space.  He previously commanded the Gemini 8 mission on March 16, 1966.  That mission performed the first successful docking of two vehicles in space.  Apollo 11 launched on July 16, 1969.  On July 20, 1969 Armstrong became the first human to set foot on the Moon..Credit: NASA via CNP