In order to introduce the space mission Gaia to the public, a group of researchers of the Department of Astronomy and Meteorology of the University of Barcelona have ellaborated the itinerant exhibit "Mil milions d'ulls per a mil milions d'estrelles" which was presented on July the 1st at the Parque Astronómico Montsec and which can be found in digital format at http://www.am.ub.edu/twiki/bin/view/ServiAstro/ExpoGaia.