Galileo Satellite Navigation System

Developed jointly by the European Space Agency (ESA) and the European Commission (EC), Galileo is Europe’s independent global navigation satellite system (GNSS), designed as a civil-controlled alternative to relieve reliance on the U.S. GPS while providing secure navigation and precise timing for civil, emergency, and security applications across Europe.

To lay the groundwork for the operational constellation, system validation began with two key testbed satellites: the 882-lb...

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