<Tr> <Th> Parent agency </Th> <Td> National Aeronautics and Space Administration </Td> </Tr> <Tr> <Th> Website </Th> <Td> JSC home page </Td> </Tr> <P> The Lyndon B. Johnson Space Center (JSC) is the National Aeronautics and Space Administration's Manned Spacecraft Center, where human spaceflight training, research, and flight control are conducted . It was built and leased to NASA by Joseph L. Smith & Associates, Inc . It was renamed in honor of the late U.S. president and Texas native, Lyndon B. Johnson, by an act of the United States Senate on February 19, 1973 . </P> <P> It consists of a complex of one hundred buildings constructed on 1,620 acres (660 hectares) in the Clear Lake Area of Houston which acquired the official nickname "Space City" in 1967 . The center is home to NASA's astronaut corps and is responsible for training astronauts from both the U.S. and its international partners . It has become popularly known for its flight control function, identified as "Mission Control" during the Gemini, Apollo, Skylab, Apollo--Soyuz, and Space Shuttle program flights . </P>

Who was the johnson space center named after