The Navstar GPS satellite program began with a launch on which date?

The Navstar GPS satellite program began with a launch on which date?

• A. February 22, 1980
• B. February 22, 1979
• C. February 22, 1978
• D. February 22, 1976

Answer: (C)

The first Navstar GPS satellite launch occurred on February 22, 1978, when Navstar-1 lifted off to begin the Navstar GPS satellite program. This launch marks the spaceborne start of the global navigation system developed by the U.S. Department of Defense. The program was in development earlier, but this date is when the actual satellite constellation began. The other years are subsequent launches and milestones, not the initial launch.

The first Navstar GPS satellite launch occurred on February 22, 1978, when Navstar-1 lifted off to begin the Navstar GPS satellite program. This launch marks the spaceborne start of the global navigation system developed by the U.S. Department of Defense. The program was in development earlier, but this date is when the actual satellite constellation began. The other years are subsequent launches and milestones, not the initial launch.