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Arridge Christopher S., Agnor Craig B., André Nicolas, Baines Kevin H., Fletcher Leigh N., Gautier Daniel, Hofstadter Mark D., Jones Geraint H., Lamy Laurent, Langevin Yves, Mousis Olivier, Nettelmann Nadine, Russell Christopher T., Stallard Tom S., Tiscareno Matthew S., Tobie Gabriel, Bacon Andrew, Chaloner Chris, Guest Michael, Kemble Steve, Peacocke Lisa, Achilleos Nicholas, Andert Thomas P., Banfield Don J., Barabash Stas, Barthélemy Mathieu, Bertucci Cesar, Brandt P. N., Cecconi Baptiste, Chakrabarti Supriya, Cheng Andrew F., Christensen U., Christou Apostolos, Coates A. J., Collinson Glyn, Cooper John F., Courtin Régis, Dougherty Michele K., Ebert Robert W., Entradas Marta, Fazakerley Andrew N., Fortney Jonathan J., Galand Marina, Gustin Jacques, Hedman Matthew M., Helled Ravit, Henri Pierre, Hess Sébastien L. G., Holmes Richard C., Karatekin Özgur, Krupp Norbert, Leisner Jared, Martin-Torres Javier, Masters Adam, Melin Henrik, Miller Steve, Müller-Wodarg Ingo, Noyelles Benoît, Paranicas Chris P., De Pater Imke, Pätzold M., Prangé Renée, Quemerais Eric, Roussos Elias, Rymer Abigail M., Sánchez-Lavega Agustín, Saur Joachim, Sayanagi Kunio M., Schenk Paul, Schubert Gerald, Sergis Nick, Sohl Frank, Sittler Edward C., Teanby Nicholas A., Tellmann Silvia, Turtle Elizabeth P., Vinatier Sandrine, Wahlund Jan-Erik, Zarka Philippe

Uranus Pathfinder: exploring the origins and evolution of Ice Giant planets

Experimental Astronomy, 2012, vol. 33, pp. 753-791

Référence DOI : 10.1007/s10686-011-9251-4
Référence ADS : 2012ExA....33..753A

Résumé :

The "Ice Giants" Uranus and Neptune are a different class of planet compared to Jupiter and Saturn. Studying these objects is important for furthering our understanding of the formation and evolution of the planets, and unravelling the fundamental physical and chemical processes in the Solar System. The importance of filling these gaps in our knowledge of the Solar System is particularly acute when trying to apply our understanding to the numerous planetary systems that have been discovered around other stars. The Uranus Pathfinder (UP) mission thus represents the quintessential aspects of the objectives of the European planetary community as expressed in ESA's Cosmic Vision 2015-2025. UP was proposed to the European Space Agency's M3 call for medium-class missions in 2010 and proposed to be the first orbiter of an Ice Giant planet. As the most accessible Ice Giant within the M-class mission envelope Uranus was identified as the mission target. Although not selected for this call the UP mission concept provides a baseline framework for the exploration of Uranus with existing low-cost platforms and underlines the need to develop power sources suitable for the outer Solar System. The UP science case is based around exploring the origins, evolution, and processes at work in Ice Giant planetary systems. Three broad themes were identified: (1) Uranus as an Ice Giant, (2) An Ice Giant planetary system, and (3) An asymmetric magnetosphere. Due to the long interplanetary transfer from Earth to Uranus a significant cruise-phase science theme was also developed. The UP mission concept calls for the use of a Mars Express/Rosetta-type platform to launch on a Soyuz-Fregat in 2021 and entering into an eccentric polar orbit around Uranus in the 2036-2037 timeframe. The science payload has a strong heritage in Europe and beyond and requires no significant technology developments.

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