美國海軍研究實驗室
Project Vanguard was a program managed by the United States Naval Research Laboratory (NRL), and designed and built by the Glenn L. Martin Company (now Lockheed-Martin), which intended to launch the first artificial satellite into Earth orbit using a Vanguard rocket. as the launch vehicle from Cape Canaveral, Florida. Vanguard 3 was an important part of the Space Race between the U.S. and the Soviet Union.