Buzz Aldrin Buzz Aldrin

The Apollo 11 command module Columbia sits in the Mary Baker Engen Restoration Hangar in Virginia, where it is undergoing conservation. Dane Penland/National Air and Space Museum/Smithsonian Institution hide caption

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Dane Penland/National Air and Space Museum/Smithsonian Institution

The Smithsonian is sharing images of astronaut graffiti aboard the Apollo 11 command module, including this tribute to the spacecraft. Smithsonian Air and Space Museum hide caption

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Smithsonian Air and Space Museum