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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ESA’s Hera asteroid mission for planetary defence seen with one of its two solar wings added, during its continuing test campaign at the ESTEC Test Centre in the Nethelands.
The van-sized spacecraft, left, is powered by a pair of solar array wings, made up of three panels each, provided by Beyond Gravity in Switzerland.
One of these 5-m-long wings was added for Hera’s ‘cold deployment check’ – a manual unfolding process to confirm that the wing fits correctly. Because the solar wings have been designed to operate in weightlessness they were supported by a frame during this test deployment.
Hera is Europe’s contribution to an international planetary defence experiment. Following the DART mission’s impact with the Dimorphos asteroid last year – modifying its orbit and sending a plume of debris thousands of kilometres out into space – Hera will return to Dimorphos to perform a close-up survey of the crater left by DART. The mission will also measure Dimorphos’ mass and make-up, along with that of the larger Didymos asteroid that Dimorphos orbits around.