From 27 July 2014 to 15 January 2025, Gaia has made more than three trillion observations of two billion stars and other objects throughout our Milky Way galaxy and beyond, mapping their motions, luminosity, temperature and composition. Gaia's extraordinarily precise three-dimensional map will provide the data needed to tackle an enormous range of important questions related to the origin, structure and evolutionary history of our galaxy.
Launch: 19 December 2013
Orbit: L2 Lagrange point
End of science observations: 15 January 2025
Data Release 4 (based on 66 months of data): expected December 2026
Data Release 5 (based on all mission data): not before the end of 2030
Previous data releases:
Data Release 1: 14 September 2016
Data Release 2: 25 April 2018
Early Data Release 3: 3 December 2020
Data Release 3: 13 June 2022
Focused Product Release: 10 October 2023
