Ask an Expert
National Air and Space Museum curator Paul Ceruzzi explains navigation problems encountered by astronauts on Apollo missions during an "Ask an Expert" session. Ceruzzi is standing next to the Apollo 11 command module, which carried astronauts home after the first walk by humans on the Moon.
Image Number: 2008-4294
Credit: Image by Mark Avino, National Air and Space Museum, Smithsonian Institution
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