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
Go to topicThis sketch shows the field of view of the COROT telescope.
The telescope itself contains a primary mirror of 30 centimetres in diameter. It is made out of two parabolic mirrors, having a 1.1-metre focal length. The field of view is a square of 2.8 x 2.8°, half for the seismology mission, the other half for the exoplanet mission. A prism, used by the telescope for certain aspects of the mission, will separate colours, enabling scientists to study stellar activity during a planetary transit.