Apollo program a total of over 20 hours EVA. Apollo 17 was the last of the Apollo program, landing in the Taurus–Littrow region in December 1972. Eugene Cernan commanded Ronald E. Evans and NASA's first scientist-astronaut, geologist Dr. Harrison H. Schmitt. Schmitt was originally scheduled for Apollo 18, but the lunar geological community lobbied for his inclusion on the final lunar landing. Cernan and Schmitt stayed on the surface for just over three days and spent just over 23 hours of total EVA. Source: "Apollo by the Numbers: A Statistical Reference" (Orloff 2004) The Apollo program returned over of lunar rocks and
Chen Dong (astronaut) 2016, marking China's longest manned space flight to date. The reentry module of the Shenzhou-11 spacecraft landed in Inner Mongolia around 2.15 p.m(China time) after detaching from the space lab on 17 November. For his achievements on the Shenzhou 11 mission, Chen was awarded the Spaceflight Merit Medal (Third Class) along with the honorary title of "hero astronaut" on 26 December 2016 by the Central Military Commission. Chen has twin sons. Chen Dong (astronaut) Chen Dong (; born 12 December 1978) is a Chinese pilot and astronaut selected as part of the Shenzhou program. A fighter pilot in the People's