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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This graph shows that at the time of the X1.1 solar flare emitted at 02:31 CET (01.31 UTC) on 23 March 2024, ESA's Soil Moisture and Ocean Salinity (SMOS) satellite recorded a large increase in solar flux – measured as radio waves in the L-band by its Miras instrument.
Read full story: SMOS and Swarm team up to spot huge solar storm