• C. Boonne, Institut Pierre Simon Laplace, Paris, France

• A. Csaszar, Eötvös University, Budapest, Hungary

• P. Drossart, Observatoire de Paris, Meudon, France

• I.E. Gordon, Harvard-Smithsonian Center for Astrophysics,

Cambridge, USA

• J.M. Hartmann, LISA, Créteil, France

• C. Hill, University College of London, London, UK

• S. Kassi, LiPhy, Université de Grenoble, France

• E. Moyer, University of Chicago, Chicago, USA

• W. Thiel, Max-Planck-Institut, Mülheim, Germany

• G. Tinetti, University College of London, London, UK

• G.C. Toon, Jet Propulsion Laboratory, Pasadena, USA