Learned League 3 Flashcards | Quizlet
Orbital Mechanics: In 1982, the Soviet Union began launching components to their GLONASS satellite constellation. In 2000, China launched its own version, called BeiDou. In 2016, Europe followed suit with Galileo. These are all analogues to what original system, developed by the United States Air Force in the 1970s and still in use today?