How many GPS satellites are there?

Related questions

1. Was Galileo imprisoned?
2. What Glonass means?
3. How many countries have their own GPS?
4. What did Galileo cost?
5. How many GPS satellites are visible at once?
6. Is there anything inside a black hole?
7. How is Galileo?
8. What is Galileo famous?
9. Is Garmin GPS accurate?
10. How many GPS systems are there?

Tags

1. #operation
2. #centered
3. #satellites
4. #satellite
5. #positioned
6. #spare
7. #earth
8. #thirty
9. #orbital
10. #orbit
11. #constellation
12. #planes
13. #plane
14. #baseline
15. #system
16. #consists
17. #support