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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The first Galileo Full Operational Capability satellite, the Proto-Flight Model, in full flight configuration for acoustic testing in ESTEC's Large European Acoustic Facility, LEAF on 11 July 2013. Note the insulation covering Galileo's main antenna. Microphones are placed around the satellite to ensure the acoustic loads are as expected, while internal accelerometers linked via the blue umbilicals measure the satellite's internal vibration.