Vanguard TV-0, also called Vanguard Test Vehicle-Zero, was the first sub-orbital test flight of a Vanguard rocket as part of the Project Vanguard. 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, powered by a basic design for large liquid rockets. as the launch vehicle from Cape Canaveral Missile Annex, Florida.