epa06766296 An undated handout file photo made available by NASA on 27 May 2018 shows astronaut Alan Bean, Lunar Module pilot, pausing near a tool carrier during the Apollo 12 spacewalk on the moon's surface. Commander Charles Conrad, Jr., who took the black-and-white photo, is reflected in Bean's helmet visor. Bean, who was the fourth person to walk on the moon, passed away on 26 May 2018 in Houston, Texas at the age of 86. EPA/NASA HANDOUT -- BLACK AND WHITE -- HANDOUT EDITORIAL USE ONLY/NO SALES