Faccio il puntiglioso: Gaia, non GAIA. Non e’ un acronimo… Lo e’ stato agli inizi della concezione della missione:
The name ‘GAIA’ was originally derived as an acronym for Global Astrometric Interferometer for Astrophysics. This reflected the optical technique of interferometry that was originally planned for use on the spacecraft. However, the working method has now changed, and although the acronym is no longer applicable, the name Gaia remains to provide continuity with the project.
Ahia :wounded: che fa rima con Gaia 
Allora correggo, grazie 