I've removed the following:
- "Many aviation and space artifacts from the Smithsonian Institution's collection are housed in the Udvar-Hazy Center in Chantilly, Virginia. These include the space shuttle Enterprise."
- "The National Aeronautics and Space Administration (NASA) operated a research center in Langley, Virginia. Langley served as the main center for the Man-in-Space program from 1958 until it was moved to the Johnson Space Center in Houston, Texas in 1963. The Langley Research Center supported NASA in their efforts to explore Mars by designing spacecraft for the missions."