Satellites are swapping around the Earth since 1957 - the launch of Sputnik. Already having a couple of thousands, the number is fast growing nowadays.

Just during the last week reading my
rss, I got to know that China has launched
Yaogan XII, Vietnam is buying
Japanese satellites, Turkish recently launched
satellite RASAT is already transmitting images, Russia is about to launch
4 more GLONASS satellites to existing 28 ones, and so on an so on.. Europe, yes Europe as well, finally launched
2 GALILEO satellites last month. Future, talking about the number of satellites, is amazing..
I am glad we still can see the sky over them.