Apollo 13 failed lunar landing. It has also been termed "NASA's finest hour." President Nixon awarded the Presidential Medal of Freedom to the crew and the Apollo 13 Mission Operations Team for their actions during the mission. The Cold Cathode Gauge Experiment (CCGE) which was part of the ALSEP on Apollo 13 was never flown again. It was a version of the Cold Cathode Ion Gauge (CCIG) which featured on Apollo 12, Apollo 14, and Apollo 15. The CCGE was designed as a standalone version of the CCIG. On other missions, the CCIG was connected as part of the Suprathermal Ion Detector
Apollo 5 Apollo 5 Apollo 5 (also known as AS-204), was the first unmanned flight of the lunar module (LM), which would later carry astronauts to the lunar surface. It lifted off on January 22, 1968, with a Saturn IB rocket on an Earth-orbital flight. The Apollo 5 mission tested the lunar module in a space environment, in particular its descent and ascent engine systems, and its ability to separate the ascent and descent stages. The descent engine would become the first throttleable rocket engine fired in space. The mission also performed a simulation of a landing abort, in which the ascent