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The downloadable subject material on this site was produced under an internal project of the European Space Agency. Therefore it is freely available to organisations and individuals located in one of the Agency’s member or cooperating states according to the criteria set out in Article II (3) of Annex V of the European Space Agency Convention[*]. The subject material shall not be redistributed or published in any form outside the recipient’s organisation. By downloading the material from this website you consent to these Terms and Conditions. [*] Available from -> “About ESA…”.