The Space Shuttle Discovery, atop a modified 747, circles the National Mall April 17, 2012. The Smithsonian Institution Building (the “Castle”) is seen in the foreground. (Photo by Chun-Hsi Wong)
The Space Shuttle Discovery, atop a modified 747, circles the National Mall April 17, 2012. The Smithsonian Institution Building (the “Castle”) is seen in the foreground. (Photo by Chun-Hsi Wong)
The Space Shuttle Discovery, atop a modified 747, circles the National Mall April 17, 2012. The Smithsonian Institution Building (the “Castle”) is seen in the foreground. (Photo by Chun-Hsi Wong)