Crater Tsiolkovsky, 12/24/1968
© National Aeronautics & Space Administration / Science & Society
'This is a view of the large crater Tsiolkovsky as photographed by the astronauts during the Apollo 8 lunar orbit mission, looking East toward the lunar horizon. Tsiolkovsky is approximately 150 statute miles in diameter. It was first identified and named by the Russians from photographs taken by their unmanned Luna III spacecraft.'