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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Copernicus Sentinel-4 being prepared for testing. Sentinel-4, which will fly on the Meteosat Third Generation Sounder satellites, will used to monitor continuously trace gases, such as nitrogen dioxide, ozone, sulphur dioxide and formaldehyde, as well as aerosols from geostationary orbit, with Europe and North Africa in its field of view.