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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At the top of the image, south of the Carpathian Mountains, the Danube brings sediment-rich waters into the Black Sea. Combined with the often-intense biological activity that takes place in this sea, the resulting phytoplankton and the suspended sediments create the vivid green patches seen in the image.
Further south, Greece, and the Aegean Sea are facing the Mediterranean. The Romans used to call the Mediterranean the ‘Mare Nostrum’, meaning, ‘Our Sea’. Since centuries, the navigation on its waters has played and important role in the development of European countries. MERIS, with its 15 visible and near-infrared channels enable the retrieval of water composition data. It provides Europe with an unprecedented tool to better understand and monitor the eco-systems of our coastal waters.