European Space Agency has validated the design of the Euclid satellite which allows its construction. This telescope, probing the dark Universe, will be launched in 2020!
See also:
http://sci.esa.int/euclid/57039-euclid-dark-universe-mission-ready-to-take-shape/ (English)
https://euclid.cnes.fr/fr/la-construction-deuclid-autorisee (French)
