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Gaia is a European Space Agency astronomy mission whose primary goals are to: (1) measure the positions and velocity of approximately one billion stars; (2) determine the brightness, temperature, composition, and motion through space of those stars; and, (3) create a three-dimensional map of the Milky Way galaxy.

Alternate Names

  • 39479

Facts in Brief

Launch Date: 2013-12-19
Launch Vehicle: Soyuz-Fregat
Launch Site: Kourou, French Guiana
Mass: 1630 kg

Funding Agency

  • European Space Agency (International)


  • Astronomy

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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