720 XTF Search Results (expand=subject;f1-subject=Launch Vehicle;f2-associated-Lesson=X-Ray History);f1-subject%3DLaunch%20Vehicle;f2-associated-Lesson%3DX-Ray%20History Results for your query: expand=subject;f1-subject=Launch Vehicle;f2-associated-Lesson=X-Ray History Thu, 01 Jan 1970 12:00:00 GMT Space Shuttle. As humanity's first reusable spacecraft,NASA's space shuttle fleet began setting records with its first launch on April 12, 1981. Starting with Columbia and continuing with Challenger, Discovery, Endeavour, and Atlantis, the shuttle has carried people into orbit repeatedly, and launched, recovered and repaired satellites. The final space shuttle mission, STS-135, ended July 21, 2011 when Atlantis rolled to a stop at its home port, NASA's Kennedy Space Center in Florida. A sixth shuttle, Enterprise, was used for testing, but never flew in space. Two shuttles failed and crashed in flight, but the remaining four shuttles are on display at public viewing sites around the country. Thu, 01 Jan 1970 12:00:00 GMT Aerobee Rocket. The Aerobee was a small, unguided sub-orbital sounding rocket, which is a rocket that carries research instruments. The Aerobees were used for high atmospheric and cosmic radiation research in the United States in the 1950s. Thu, 01 Jan 1970 12:00:00 GMT Wernher von Braun. A pioneer of America's space program, Dr. von Braun stands by the five F-1 engines of the Saturn V Dynamic Test Vehicle on display at the U.S. Space And Rocket Center in Huntsville, Alabama, circa 1969. Dr. von Braun served as the first director of the NASA Marshall Space Flight Center and was the chief architect of the Saturn V launch vehicle, the superbooster that propelled the Apollo spacecraft to the Moon. Thu, 01 Jan 1970 12:00:00 GMT