On July 29, 1958, President Dwight D. Eisenhower signed the National Aeronautics and Space Act, establishing the National Aeronautics and Space Administration. NASA absorbed the existing National Advisory Committee for Aeronautics along with its 8,000 employees, $100 million annual budget, and three research laboratories. The agency began operations on October 1, 1958, with T. Keith Glennan as its first administrator. Created in response to the Soviet launch of Sputnik 1, NASA centralized U.S. civilian space research and exploration under a single federal authority.