Factbox: Eugene Cernan, last man to walk on moon, dies at 82

(Reuters) - Facts about retired U.S. astronaut Eugene Cernan, the last man to walk on the moon, who died on Monday: * In addition to being one of 12 men to walk on the moon, Cernan was the third person to walk in space, following Russian Alexei Leonov and American Ed White. Cernan spent two hours and seven minutes outside the Gemini 9 spacecraft on the 1966 mission but had to come in early because his helmet visor was fogging up due to exertion. Because the spacewalk was shortened, Cernan did no