“You can tell the world that we have arrived!” 👨‍🚀 Fifty years ago, Apollo 10 launched to rehearse all the steps and reproduce all the events of the Apollo 11 Moon landing mission, with the exception of the lunar touchdown, stay and liftoff. Blast back to the past: | NASA - National Aeronautics and Space Administration

May 21, 1969: Apollo 10 was a human spaceflight, the fourth crewed mission in the United States Apollo program, and the second (after Apollo 8) to orbit the Moon. It was the F mission: a “dress rehearsal” for the first Moon landing, testing all the components and procedures just short of actually landing. While astronaut John Young remained in the Command Module orbiting the Moon, astronauts Thomas Stafford and Gene Cernan flew the Apollo Lunar Module (LM) “Snoopy” to a descent orbit within 8.4