On July 20, 1969, four days after being launched into space by the Boeing-built Saturn S-1C booster, Apollo 11 Lunar Excursion Module "Eagle" touches down on the moon's Sea of Tranquility. Astronaut Neil Armstrong becomes the first human being to set foot on another celestial body, followed by companion Edwin "Buzz" Aldrin, while Michael Collins remains in lunar orbit aboard the Command Module.
In addition to building the giant Saturn S-IC boosters for NASA, Boeing also coordinated technology and integration for the Apollo program, built the Lunar Orbiters which surveyed possible landing sites, and built the Lunar Rovers used on the last three missions to the moon.