Gaia Satellite

3d mapping art artist impression astrometry astronomy astrophotography astrophysics cartography celestial body celestial mapping celestial mechanics deep sky deep space esa european space agency gaia mission gaia satellite gaia galactic structure galaxy illustration imaging lagrange point lagrangian point lissajous orbit lissajous type orbit ls map mapping milky way observatory photometry probe science space art space exploration space probe space spacecraft spectrometry star stellar