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Galileo is a global navigation satellite system ( GNSS ) currently being built by the European Union ( EU ) and European Space Agency ( ESA ).

The € 20 billion project is named after the Italian astronomer Galileo Galilei.

One of the aims of Galileo is to provide a high-precision positioning system upon which European nations can rely, independently from the Russian GLONASS, US GPS, and Chinese Compass systems, which can be disabled in times of war or conflict.