The Gaia Science Team

The Gaia Science Team (GST) advises ESA, through the Project Scientist, on all top-level science performance, science policy and science organisation aspects of the Gaia mission. 

Group picture of the Gaia Science Team members​​​​​​​

The Gaia Science Team on 9 June 2026 at their meeting in Leiden Observatory. From left to right: Johannes Sahlmann (Project Scientist), Laura Magrini, François Mignard, Nicholas Walton, Anthony Brown (DPACE chair), Lennart Lindegren, Sergei Klioner, Rodolfo Smiljanic, Carme Jordi.
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Members of the Gaia Science Team
 

Name Since Affiliation
Carme Jordi 2002 Barcelona, Spain
Sergei Klioner 2007 Dresden, Germany
Lennart Lindegren 2001 Lund, Sweden
Laura Magrini 2026 Arcetri, Italy
François Mignard 2013 Nice, France
Rodolfo Smiljanic 2022 Warsaw, Poland
Nicholas Walton 2007 Cambridge, United Kingdom
Anthony Brown 2009 Leiden, The Netherlands (DPACE Chair, ex officio member of GST)
Johannes Sahlmann 2024 ESA/ESAC (GST Chair, Gaia Project Scientist)

 

Former members of the Gaia Science Team

 

Name Period Affiliation
Conny Aerts 2007 - 2008 Leuven, Belgium
Frédéric Arenou 2001 - 2005 Meudon, France
Carine Babusiaux 2006 - 2007 Meudon, France
Coryn Bailer-Jones 2001 - 2007 MPIA, Heidelberg, Germany
Ulrich Bastian 2001 - 2007 ARI, Heidelberg, Germany
Anthony Brown 2006 - 2007 Leiden, The Netherlands
Mark Cropper 2006 - 2007 MSSL - UCL, United Kingdom
Eva Grebel 2007 - 2008 ARI, Heidelberg, Germany
Erik Høg 2001 - 2007 Copenhagen, Denmark
Andrew Holland 2001 - 2005 Leicester/Brunel, United Kingdom
Fred Jansen 2006 ESA/ESTEC (Gaia Project Scientist)
David Katz 2001 - 2007 Meudon, France
Mario Lattanzi 2001 - 2005 Torino, Italy
Floor van Leeuwen 2003 - 2007 Cambridge, United Kingdom
Xavier Luri 2001 - 2007 Barcelona, Spain
François Mignard 2001 - 2012 Nice, France
Michael Perryman 2001 - 2006 ESA/ESTEC (Gaia Project Scientist)
Timo Prusti 2007 - 2024 ESA/ESTEC (Gaia Project Scientist)
Maria-Sofia Randich 2007 - 2025 Arcetri, Italy
Caroline Soubiran 2009 - 2021 Bordeaux, France

 

Group picture of the Gaia Science Team members

The Gaia Science Team in front of the 1:1 Gaia model at ESAC, Spain. Photo was taken in October 2024. From left to right: Carme Jordi, Anthony Brown (DPACE chair), Nicholas Walton, Johannes Sahlmann, Rodolfo Smiljanic, Lennart Lindegren, François Mignard, Maria-Sofia Randich, Sergei Klioner.

 

Group picture of the Gaia Science Team members

Gaia Science Team group picture taken on 5 July 2013. From left to right: Carme Jordi, Sergei Klioner, Caroline Soubiran, Lennart Lindegren, François Mignard, Maria-Sofia Randich, Anthony Brown (DPACE chair), Timo Prusti (Gaia Project Scientist), Nicholas Walton. Credits: Gaia Science Team

 

Members of the Gaia Science Advisory Group (1997-2000)

Corresponding to Phase A: the Project Feasibility Phase

 

Who Affiliation
Gerard Gilmore Institute of Astronomy, Cambridge
Erik Høg Niels Bohr Institute, Copenhagen (formerly Copenhagen University Observatory)
Mario Lattanzi Osservatorio Astronomico di Torino
Lennart Lindegren Lund Observatory
Siegfried Röser (until 1998) ARI, Heidelberg
Tim de Zeeuw Sterrewacht Leiden
François Mignard Observatoire de la Côte d'Azur, Nice
Klaas de Boer (from 1998) University of Bonn
Xavier Luri (from 1998) Universitat de Barcelona
Michael Perryman ESA/ESTEC (Gaia Study Scientist)