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Arridge Christopher S., Achilleos Nicholas, Agarwal Jessica, Agnor Craig B., Ambrosi R., André Nicolas, Badman Sarah V., Baines Kevin H., Banfield Don J., Barthélemy Mathieu, Bisi Mario M., Blum J., Bocanegra-Bahamon Tatiana, Bonfond B., Bracken C., Brandt P. N., Briand Carine, Briois C., Brooks Shawn, Castillo-Rogez Julie C., Cavalié Thibault, Christophe Bruno, Coates A. J., Collinson Glyn, Cooper John F., Costa-Sitja M., Courtin Régis, Daglis I. A., De Pater Imke, Desai M., Dirkx D., Dougherty Michele K., Ebert Robert W., Filacchione Gianrico, Fletcher Leigh N., Fortney Jonathan J., Gerth I., Grassi Davide, Grodent D. C., Grün Eberhard, Gustin Jacques, Hedman Matthew M., Helled Ravit, Henri Pierre, Hess Sébastien L. G., Hillier J. K., Hofstadter M. H., Holmes Richard C., Horanyi M., Hospodarsky George B., Hsu S. T., Irwin Patrick G. J., Jackman Caitriona M., Karatekin Özgur, Kempf S., Khalisi E., Konstantinidis K., Krüger H., Kurth William S., Labrianidis C., Lainey Valéry, Lamy Laurent, Laneuville M., Lucchesi D., Luntzer A., MacArthur J., Maier A., Masters Adam, McKenna-Lawlor S., Melin Henrik, Milillo Anna, Moragas-Klostermeyer G., Morschhauser A., Moses Julianne I., Mousis Olivier, Nettelmann Nadine, Neubauer Fritz M., Nordheim Tom A., Noyelles Benoît, Orton Glenn S., Owens M. J., Peron R., Plainaki Christina, Postberg Frank, Rambaux Nicolas, Retherford Kurt D., Reynaud Serge, Roussos Elias, Russell Christopher T., Rymer Abigail M., Sallantin R., Sánchez-Lavega Agustín, Santolýk Ondrej, Saur Joachim, Sayanagi Kunio M., Schenk Paul, Schubert Josef, Sergis Nick, Sittler Edward C., Smith A., Spahn F., Srama Ralf, Stallard Tom S., Sterken V. J., Sternovsky Z., Tiscareno Matthew S., Tobie Gabriel, Tosi Federico, Trieloff M., Turrini Diego, Turtle Elizabeth P., Vinatier Sandrine, Wilson R., Zarka Philippe

The science case for an orbital mission to Uranus: Exploring the origins and evolution of ice giant planets

Planetary and Space Science, 2014, vol. 104, pp. 122-140

Référence DOI : 10.1016/j.pss.2014.08.009
Référence ADS : 2014P&SS..104..122A

Résumé :

Giant planets helped to shape the conditions we see in the Solar System today and they account for more than 99% of the mass of the Sun's planetary system. They can be subdivided into the Ice Giants (Uranus and Neptune) and the Gas Giants (Jupiter and Saturn), which differ from each other in a number of fundamental ways. Uranus, in particular is the most challenging to our understanding of planetary formation and evolution, with its large obliquity, low self-luminosity, highly asymmetrical internal field, and puzzling internal structure. Uranus also has a rich planetary system consisting of a system of inner natural satellites and complex ring system, five major natural icy satellites, a system of irregular moons with varied dynamical histories, and a highly asymmetrical magnetosphere. Voyager 2 is the only spacecraft to have explored Uranus, with a flyby in 1986, and no mission is currently planned to this enigmatic system. However, a mission to the uranian system would open a new window on the origin and evolution of the Solar System and would provide crucial information on a wide variety of physicochemical processes in our Solar System. These have clear implications for understanding exoplanetary systems. In this paper we describe the science case for an orbital mission to Uranus with an atmospheric entry probe to sample the composition and atmospheric physics in Uranus' atmosphere. The characteristics of such an orbiter and a strawman scientific payload are described and we discuss the technical challenges for such a mission. This paper is based on a white paper submitted to the European Space Agency's call for science themes for its large-class mission programme in 2013.

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