The Space Museum

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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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Democratic Presidential candidate Hillary Clinton listens to a question during a panel discussion on national security, Wednesday, June 15, 2016, at the Virginia Air and Space Museum in Hampton, Va. (AP Photo/Steve Helber)

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Democratic Presidential candidate Hillary Clinton gestures during a panel discussion on national security, Wednesday, June 15, 2016, at the Virginia Air and Space Museum in Hampton, Va. (AP Photo/Steve Helber)

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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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Innovations in Flight Family Day and Outdoor Aviation Display – Smithsonian National Air and Space Museum - Mark your calendars for the chance to let your kids see more than 50 visiting aircraft up close! The Smithsonian National Air and Space Museum will host its Innovations in Flight Family Day and Outdoor Aviation Display on Saturday, June 20 from 10 am to 3 pm at the Steven F. Udvar-Hazy Center in Chantilly, VA. For more information, visit: http://innovationsinflight.si.edu/

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FILE - This Aug. 10, 2012 file photo shows Stephen Colbert, host of "The Colbert Report," onstage during StePhest Colbchella '012 Rocktaugustfest at the Intrepid Sea, Air & Space Museum in New York. CBS announced Thursday, April 10, 2014, Colbert will succeed David Letterman as the host of “The Late Show.” (Photo by Jason DeCrow/Invision/AP, File)

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FILE - This Aug. 10, 2012 file photo shows Stephen Colbert, host of "The Colbert Report," onstage during StePhest Colbchella '012 Rocktaugustfest at the Intrepid Sea, Air & Space Museum in New York. CBS announced Thursday, April 10, 2014, Colbert will succeed David Letterman as the host of “The Late Show.” (Photo by Jason DeCrow/Invision/AP, File)

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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)

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This undated artist rendering provided by the National Air and Space Museum, Smithsonian Institution shows changes to Milestones of Flight Hall at the 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/National Air and Space Museum, Smithsonian Institution)