The European Space Agency (ESA) is Europe’s gateway to space. Its mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world.
Find out more about space activities in our 23 Member States, and understand how ESA works together with their national agencies, institutions and organisations.
Exploring our Solar System and unlocking the secrets of the Universe
Go to topicProtecting life and infrastructure on Earth and in orbit
Go to topicUsing space to benefit citizens and meet future challenges on Earth
Go to topicMaking space accessible and developing the technologies for the future
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Around 50 stations dotted around Europe monitor the current status of satellite navigation signals across the continent and their findings are used as the basis for a ‘correction’ message which serves to sharpen the precision of positioning fixes while also advising on their ‘integrity’, or ongoing reliability. These correction messages are uplinked to geostationary satellites for rebroadcast to all EGNOS-equipped receivers, which are mostly deployed in safety-critical applications such as civil aviation, maritime and agriculture.