Gaia project at ARI
Gaia is a big astrometry mission by the European Space Agency ESA. The Gaia satellite was launched in December 19, 2013. Commissioning of the satellite officially ended on July 18. After a short calibration period of 28 days the regular scientific measurements will start.
Gaia will measure the positions, parallaxes, proper motions, luminosities and colours of more than 1 billion stars with unprecedented precision, complemented by radial velcities and spectra of 100 million stars. Its main goal is to elucidate the structure, formation and evolution of the Milky Way.
The scientific data reduction for the Gaia mission is being prepared by the pan-European Data Processing and Analysis Consortium (DPAC, external link).