NASA handout photographs from the various Apollo missions are shown in this combination photograph. The photographs are some of more than 12,000 from NASA's archives recently aggregated on the Project Apollo Archive Flickr account. (Top L) David R. Scott, command module pilot, stands in the open hatch of the Command Module during the Apollo 9 mission March 6, 1969. (Top centre) Edwin "Buzz" Aldrin Jr.walks on the surface of the moon during the Apollo 11 mission July 20, 1969. (Top R) Neil Armstrong, Apollo 11 commander, is pictured inside the Lunar Module during the Apollo 11 mission July 20, 1969. (Bottom L) Alan Bean holds a container filled with lunar soil collected during the Apollo 12 mission November 19, 1969. (Bottom centre) Scientist-astronaut Harrison Schmitt rides in the Lunar Roving Vehicle during the Apollo 17 mission December 13, 1972. (Bottom R) Harrison Schmitt stands next to a huge, split boulder during the Apollo 17 mission December 13, 1972. (Photo by Reuters/NASA)





The expended Saturn IVB stage is pictured from the Apollo 7 spacecraft during transposition and docking maneuvers in this October 11, 1968 NASA handout photo. The photograph is one of more than 12,000 from NASA's archives recently aggregated on the Project Apollo Archive Flickr account. (Photo by Reuters/NASA)





Astronaut Russell L. Schweickart, lunar module pilot, operates a 70mm Hasselblad camera during his extravehicular activity (EVA) on the fourth day of the Apollo 9 Earth-orbital mission in this March 6, 1969 NASA handout photo. (Photo by Reuters/NASA)





David R. Scott, command module pilot, stands in the open hatch of the Command Module (CM) during extravehicular activity (EVA), on the fourth day of the Apollo 9 Earth-orbital mission in this March 6, 1969 NASA handout photo. (Photo by Reuters/NASA)





The Apollo 9 Lunar Module (LM), "Spider", is pictured in a lunar landing configuration, as photographed from the Command and Service Modules (CSM) on the fifth day of the Apollo 9 Earth-orbital mission in this March 7, 1969 NASA handout photo. (Photo by Reuters/NASA)





Astronaut Edwin E. Aldrin Jr., lunar module pilot, is pictured in the Apollo 11 Lunar Module (LM) during the lunar landing mission in this July 20, 1969 NASA handout photo. (Photo by Reuters/NASA)





The earth is pictured as photographed from 10,000 nautical miles away during the Apollo 11 mission in this July 16, 1969 NASA handout photo. (Photo by Reuters/NASA)





The surface of the moon is pictured during the Apollo 11 mission in this July 21, 1969 NASA handout photo. (Photo by Reuters/NASA)





Astronaut Neil A. Armstrong, Apollo 11 commander, is pictured inside the Lunar Module (LM) while the LM rested on the lunar surface during the Apollo 11 mission in this July 20, 1969 NASA handout photo. (Photo by Reuters/NASA)





Astronaut Edwin E. Aldrin Jr., lunar module pilot, descends the steps of the Lunar Module (LM) ladder as he prepares to walk on the moon during the Apollo 11 mission in this July 20, 1969 NASA handout photo. (Photo by Reuters/NASA)





An astronaut's boot and bootprint in the lunar soil is pictured during the Apollo 11 lunar surface extravehicular activity in this July 20, 1969 NASA handout photo. (Photo by Reuters/NASA)





The plaque which the Apollo 11 astronauts left on the moon in commemoration of the historic lunar landing mission is pictured in this July 20, 1969 NASA handout photo. The plaque reads: "Here men from the planet Earth first set foot upon the Moon July 1969, A.D. We came in peace for all Mankind.Neil A. Armstrong - Michael Collins - Edwin E . Aldrin Jr". (Photo by Reuters/NASA)





Astronaut Edwin E. Aldrin Jr., lunar module pilot, walks on the surface of the moon near the leg of the Lunar Module (LM) "Eagle" during the Apollo 11 extravehicular activity (EVA) in this July 20, 1969 NASA handout photo. (Photo by Reuters/NASA)





Astronaut David R. Scott, commander, approaches the Lunar Roving Vehicle (LRV) during the Apollo 15 mission in this July 1971 NASA handout photo. (Photo by Reuters/NASA)





Astronaut Edwin E. Aldrin Jr., lunar module pilot, deploys a scientific research package on the surface of the moon near the Lunar Module (LM) "Eagle" during the Apollo 11 extravehicular activity (EVA) in this July 20, 1969 NASA handout photo. (Photo by Reuters/NASA)





Earth rises above the moon's horizon during the Apollo 11 lunar mission in this July 1969 NASA handout photo. (Photo by Reuters/NASA)





Astronaut Alan L. Bean, Lunar Module LM pilot, deploys the Apollo Lunar Surface Experiments Package ALSEP during the Apollo 12 mission in this November 19, 1969 NASA handout photo. (Photo by Reuters/NASA)





Astronaut Charles "Pete" Conrad Jr., Apollo 12 commander, climbs down on to the lunar surface during the first extravehicular activity of the Apollo 12 mission in this November 16, 1969 NASA handout photo. (Photo by Reuters/NASA)





Astronaut Charles "Pete" Conrad Jr., Apollo 12 commander, stands beside the United States flag on the lunar surface during the first extravehicular activity in this November 16, 1969 NASA handout photo. (Photo by Reuters/NASA)





Astronaut Alan L. Bean holds a Special Environmental Sample Container filled with lunar soil collected during the Apollo 12 mission in this November 19, 1969 NASA handout photo. (Photo by Reuters/NASA)





Astronaut John L. Swigert Jr. (R), command module pilot, and an unidentified astronaut work with some of the temporary hose connections and apparatus which were necessary when the three Apollo astronauts moved from the Command Module to use the Landing Module as a "lifeboat" following an explosion during the Apollo 13 mission in this April 1970 NASA handout photo. In the background is the "mail box," a jury-rigged arrangement which the crew men built to use the CM lithium hydroxide canisters to scrub CO2 from the spacecraft's atmosphere. (Photo by Reuters/NASA)





Apollo 15 commander Dave Scott takes samples at the boulder on the rim of Hadley Rille during the Apollo 15 mission in this July 1971 NASA handout photo. Astronaut James B. Irwin, lunar module pilot, can be seen in the reflection in Scott's visor. (Photo by Reuters/NASA)





The "mail box," a jury-rigged arrangement which the crew men built to use the CM lithium hydroxide canisters to scrub CO2 from the spacecraft's atmosphere is pictured during the Apollo 13 mission in this April 1970 NASA handout photo. (Photo by Reuters/NASA)





Scientist-astronaut Harrison H. Schmitt is photographed seated in the Lunar Roving Vehicle (LRV) at Station 9 (Van Serg Crater) during the third Apollo 17 extravehicular activity (EVA) at the Taurus-Littrow landing site during the Apollo 17 mission in this December 13, 1972 NASA handout photo. (Photo by Reuters/NASA)





Scientist-astronaut Harrison H. Schmitt is photographed standing next to a huge, split boulder during the third Apollo 17 extravehicular activity (EVA) at the Taurus-Littrow landing site on the moon during the Apollo 17 mission in this December 13, 1972 NASA handout photo. (Photo by Reuters/NASA)





Scientist-astronaut Harrison Schmitt, Apollo 17 lunar module pilot, uses an adjustable sampling scoop to retrieve lunar samples during the second Apollo 17 extravehicular activity in this December 12, 1972 NASA handout photo. (Photo by Reuters/NASA)





Astronaut Ronald E. Evans is photographed performing extravehicular activity during the Apollo 17 spacecraft's trans-Earth coast in this December 17, 1972 NASA handout photo. (Photo by Reuters/NASA)





Astronaut Eugene A. Cernan, Apollo 17 commander, is photographed inside the lunar module on the lunar surface following the second extravehicular activity (EVA) of his mission in this December 12, 1972 NASA handout photo. (Photo by Reuters/NASA)





Astronaut Gene Cernan is pictured in the Command Module during the outbound trip from the moon during the Apollo 17 mission in this December, 1972 NASA handout photo. (Photo by Reuters/NASA)





Astronaut Walter Cunningham, Apollo 7 lunar module pilot, is photographed during the Apollo 7 mission in this October 1968 NASA handout photo. (Photo by Reuters/NASA)