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 ultraviolet image of Mars was taken on 24 February 2007 with the OSIRIS wide-angle camera through the 'OH' colour filter, intended for the indirect detection of water when observing comet 67/P Churyumov-Gerasimenko.
Clouds are visible at the North polar cap of Mars and at the morning 'limb' (border or outermost edge of a celestial body). A high-altitude cloud is also visible and shown in the inset.