Gaiverse is the GENIUS portal where you’ll find all the information related to ESA’s Gaia mission, whose objective is the creation of a three-dimensional map of our Galaxy (available in several different languages).
GREAT Consortium, EU/ESF-funded collaboration to foster and prepare Gaia-related research.
(GREAT = 'Gaia Research for European Astronomy Training').
ELSA Consortium, EU-funded Marie-Curie Research and Training Network to foster the development of a new generation of researchers in the area of space astrometry
(ELSA = 'European Leadership in Space Astrometry').
Local Gaia document archive at ARI (restricted access)