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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Space weather can affect satellites in orbit, trigger geomagnetic storms on Earth and interfere with ground infrastructure. We need to understand it better, and the best way to do that is look at where it comes from.
The Sun’s corona, its upper atmospheric layer, gives rise to the solar wind and is where coronal mass ejections are spawned: massive outward explosions of charged plasma. ESA’s Proba-3 double-satellite mission will use formation flying to open up sustained coronal views. Mimicking a total solar eclipse, one satellite will block out the fiery face of the Sun by casting a shadow onto the other. This means the mission can observe the fine-scale structures of the corona without being blinded by the Sun’s glare.