Mark N. BrownStatus: Retired 11/18/1951 – Nationality: American Type: Government First Flight: 8/8/1989 Last Flight: 9/12/1991Mark Neil Brown is an American engineer, retired Colonel in the United States Air Force and former NASA astronaut.LaunchesSpace Shuttle Columbia / OV-102 | STS-28Space Shuttle Discovery / OV-103 | STS-48National Aeronautics and Space AdministrationType: Government Abbreviation: NASA Administration: Administrator: Jim Bridenstine Founded: 1958 Launchers: Space Shuttle | SLS Spacecraft: Orion Country: USAThe National Aeronautics and Space Administration is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research. NASA have many launch facilities but most are inactive. The most commonly used pad will be LC-39B at Kennedy Space Center in Florida.