The day GPS was fully operational – level 2


The Global Positioning System (GPS) is a satellite system which gives information about your location on the Earth.

GPS was originally made by the United States for the US Army, but it is now used by people all over the world.

GPS is made of 24 satellites which go around the Earth. The satellites send signals to GPS receivers on the ground, for example, smartphones.

GPS satellites travel at a height of 20,000 km above the Earth and they go around the Earth twice a day.

The GPS system became fully operational on July 17, 1995.

Difficult words: location (a place), satellite (a machine which travels around the Earth), receiver (a machine which receives a signal).

What satellite services have been developed since the creation of the GPS system?


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