The first catalogue of more than a billion stars from ESA’s Gaia satellite is published

See ESA’s announcement.

Many scientists from OCA have contributed to this achievement.

In MAUCA the following METEOR are linked to GAIA:

Galactic Archaeology

Stellar Clusters: Rosetta stone of stellar and galactic evolution

Formation and Interpretation of Stellar Spectra

Stellar Pulsation and Evolution Polar and Space Missions