In the year 1960, Houston International Airport was deemed inadequate for the needs of the city. This airport could not be expanded, so Houston Intercontinental Airport (now George Bush Intercontinental Airport) was built north of the city. September 1961 saw Hurricane Carla, a very destructive hurricane, hit the city. On July 4, 1962, NASA opened the Manned Spacecraft Center in southeast Houston in the Clear Lake area, now the Lyndon B. Johnson Space Center. This would bring many jobs to the Houston, especially the Clear Lake area. Also in 1962, Houston voters soundly defeated a referendum to implement zoning—the second time in fifteen years. In 1963, the University of Houston ended its status as a private institution and became a state university by entering into the Texas State System of Higher Education after a long battle with opponents from other state universities blocking the change.