It is hard to believe that 39 years ago this week NASA astronauts began what would be the last walk on the moon. It was also the last manned spaceflight outside of low Earth orbit, which is even harder to imagine considering the speed at which the United States conceived of and actually walked on the moon. Many people thought we'd certainly have walked on Mars by now.
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Anyway, in this picture below from Dec. 13, 1972 NASA says scientist-astronaut Harrison Schmitt is standing next to a huge, split lunar boulder during the third Apollo 17 extravehicular activity at the Taurus-Littrow landing site. The Lunar Roving Vehicle, which transported Schmitt and Eugene Cernan to this extravehicular station from their Lunar Module, is seen in the background. Apollo 17 came back to Earth on Dec. 19, 1972.
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