Smithsonian Institution

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Giant panda Qing Bao (National Zoo - Smithsonian Institution)

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Giant panda Bao Li (National Zoo - Smithsonian Institution)

This undated handout photo provided by the National Air and Space Museum, Smithsonian Institution shows a Star Trek starship Enterprise studio model. The model of the fictional Starship Enterprise will go on display in the reimagined Boeing Milestones of Flight Hall. For the first time since its 1976 opening, the Smithsonian's National Air and Space Museum plans to overhaul its central exhibition showing the milestones of flight. The extensive renovation announced Thursday will be carried out over the next two years with portions of the exhibit closing temporarily over time, said Museum Director J.R. "Jack" Dailey. (AP Photo/Mark Avino, National Air and Space Museum, Smithsonian Institution )

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The Smithsonian Institution's National Air and Space Museum is launching a crowdfunding campaign to conserve the spacesuit Neil Armstrong wore on the moon. Conservators say spacesuits were built for short-term use with materials that break down over time. (Associated Press)

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This handout photo provided by the National Air and Space Museum, Smithsonian Institution shows the spacesuit worn by astronaut Neil Armstrong, Commander of the Apollo 11 mission, which landed the first man on the moon on July 20, 1969. (Eric Long/National Air and Space Museum, Smithsonian Institution via AP)

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Guitarist Eddie Van Halen has been honored by the Smithsonian Institution for his contributions to American music. (Smithsonian Institution)

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Smithsonian Enterprises, the business arm of the Smithsonian Institution, is launching its first new magazine in 30 years with a focus on cultural travelers. (AP Photo/Andrew Harnik)

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The Smithsonian Institution's Smithsonian Castle is seen at the National Mall in Washington, Tuesday, Jan. 27, 2015. The Smithsonian Institution is working to establish its first international museum outpost in London as the city redevelops its Olympic park. (AP Photo/Manuel Balce Ceneta)

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This undated handout photo provided by the National Air and Space Museum, Smithsonian Institution shows a Star Trek starship Enterprise studio model. The model of the fictional Starship Enterprise will go on display in the reimagined Boeing Milestones of Flight Hall. For the first time since its 1976 opening, the Smithsonian's National Air and Space Museum plans to overhaul its central exhibition showing the milestones of flight. The extensive renovation announced Thursday will be carried out over the next two years with portions of the exhibit closing temporarily over time, said Museum Director J.R. "Jack" Dailey. (AP Photo/Mark Avino, National Air and Space Museum, Smithsonian Institution )

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This undated handout photo provided by the National Air and Space Museum, Smithsonian Institution shows a Star Trek starship Enterprise studio model. The model of the fictional Starship Enterprise will go on display in the reimagined Boeing Milestones of Flight Hall. For the first time since its 1976 opening, the Smithsonian's National Air and Space Museum plans to overhaul its central exhibition showing the milestones of flight. The extensive renovation announced Thursday will be carried out over the next two years with portions of the exhibit closing temporarily over time, said Museum Director J.R. "Jack" Dailey. (AP Photo/Mark Avino, National Air and Space Museum, Smithsonian Institution )

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This undated handout photo provided by the National Air and Space Museum, Smithsonian Institution shows The Milestones of Flight Gallery, the main hall of the Smithsonian’s National Air and Space Museum, in Washington. For the first time since its 1976 opening, the Smithsonian's National Air and Space Museum plans to overhaul its central exhibition showing the milestones of flight. The extensive renovation announced Thursday will be carried out over the next two years with portions of the exhibit closing temporarily over time, said Museum Director J.R. "Jack" Dailey. (AP Photo/Eric Long, National Air and Space Museum, Smithsonian Institution)

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This undated handout photo provided by the National Air and Space Museum, Smithsonian Institution shows the Apollo Lunar Module number 2, currently on display in the Lunar Exploration Vehicles gallery in the National Air and Space Museum in Washington. Some of the most iconic artifacts of aviation and space history are getting an updated display for the 21st century, with the Apollo moon landing as the centerpiece. For the first time since its 1976 opening, the Smithsonian's National Air and Space Museum plans to overhaul its central exhibition showing the milestones of flight. The extensive renovation announced Thursday will be carried out over the next two years with portions of the exhibit closing temporarily over time, said Museum Director J.R. "Jack" Dailey. (AP Photo/Eric Long, National Air and Space Museum, Smithsonian Institution)

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This undated handout photo provided by the National Air and Space Museum, Smithsonian Institution shows The “Spirit of St. Louis” which will be one of the premier artifacts in the Boeing Milestones of Flight Hall. For the first time since its 1976 opening, the Smithsonian's National Air and Space Museum plans to overhaul its central exhibition showing the milestones of flight. The extensive renovation announced Thursday will be carried out over the next two years with portions of the exhibit closing temporarily over time, said Museum Director J.R. "Jack" Dailey. (AP Photo/Eric Long, National Air and Space Museum, Smithsonian Institution)