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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Spheres robots on the International Space Station. The volleyball-sized satellites have their own power, propulsion and navigation systems and are used in an international competition for secondary-school students.
Each year a tournament is held where students earn points by writing control algorithms to operate the spheres and by choosing the best tactics to win the game.