Apollo 13 mission to land on the Moon. The astronauts' mission insignia was sculpted as a medallion depicting "Steeds of Apollo" by Lumen Martin Winter and was struck by the Franklin Mint. The Apollo 13 mission was to explore the Fra Mauro formation, or Fra Mauro highlands, named after the diameter Fra Mauro crater located within it. It is a widespread, hilly selenological area thought to be composed of ejecta from the impact that formed Mare Imbrium. The next Apollo mission, Apollo 14, eventually made a successful flight to Fra Mauro. April 14, 1970 UTC (April 13, 21:07:53 CST) April 15, 1970,
Apollo program landings. The S-IC first stage burned RP-1/LOX for a rated thrust of , which was upgraded to . The second and third stages burned liquid hydrogen, and the third stage was a modified version of the S-IVB, with thrust increased to and capability to restart the engine for translunar injection after reaching a parking orbit. NASA's Director of Flight Crew Operations during the Apollo program was Donald K. "Deke" Slayton, one of the original Mercury Seven astronauts who was medically grounded in September 1962 due to a heart murmur. Slayton was responsible for making all Gemini and Apollo crew assignments.