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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ATHENA is a scalable technology meaning it can grow to fit whatever a mission needs. On a 1U CubeSat it will be possible to fit up to eight emitters. This clustering means it can build and build to also serve larger propulsion systems; eventually the company intends to be able to fit larger ATHENAS on-board satellites up to 300kg in mass.