Galileo is the European Union's global navigation satellite system that provides highly accurate positioning and timing information. It aims to give civilian users access to high-quality PNT services across the entire world independently of other systems. The system will consist of 30 satellites organized into three orbital planes. Four Galileo In-Orbit Validation satellites have already been launched to test the system architecture and performance before the full operational deployment. The European Commission, European GNSS Agency, and European Space Agency oversee development and funding of Galileo.