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
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Go to topicMaking space accessible and developing the technologies for the future
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Juventas – the Roman name for the daughter of Hera – is being developed for ESA by the GomSpace company and GMV in Romania, together with consortia of additional partners developing the spacecraft instruments. This six-unit CubeSat would fly with ESA's proposed Hera mission to the Didymos binary asteroid system. Juventas will deploy a metre and a half long low-frequency radar antenna, which will unfurl like a tape measure, to probe deep beneath the asteroids' surfaces. The fine Sun sensors shown in the diagram will help keep Juventas while its inter-satellite link (ISL) radio frequency systems will link it to its Hera mothership.