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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Rosetta’s Structural and Thermal Model – an initial replica of the final flight model, built for early testing – being lowered into the Large Space Simulator (LSS) at ESA’s ESTEC Test Centre in Noordwik, the Netherlands, in April 2000. The LSS is Europe’s single largest vacuum chamber, 15 m in height and 10 m in diameter, used to test full-size spacecraft in representative space conditions.