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 image offers an internal view of the Copernicus Sentinel-5P satellite. The mechanical platform consists of a hexagonal structure and three solar wings that are deployed once the satellite is in orbit. It houses the Tropomi sensor and instruments such as the optical assembly, radiant cooler and instrument control unit. Tropomi is mounted on the ‘top floor’ of the platform and positioned at an angle of 30°to ensure the instrument points towards Earth. Antennas, startrackers and radiant cooler are also mounted on the top floor. The propulsion system, which is a monopropellant hydrazine system, has a capacity of 82 kg with four 1 N thrusters in two redundant pairs. Sentinel-5P is 3.5 m high, 5.63 m across and weighs 820 kg, including fuel.