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 image, obtained by Cassini’s SAR radar during the third fly by of Titan, shows longitudinal dunes on the surface. The area covered is about 250 kilometres wide, and it is centred at 20° North and 95° West. During a later flyby of Titan, Cassini’s radar found out that these dunes, of eolian origin, are actually pervasive, present on vast sand seas in the equatorial region.