Lunar and Planetary Science XLVIII (2017) 2654.pdf JOINT EUROPA MISSION (JEM). A MULTISCALE STUDY OF EUROPA TO CHARACTERIZE ITS HABITABILITY AND SEARCH FOR EXTANT LIFE. O. Prieto-Ballesteros1, M. Blanc2, N. André2, J. Gómez- Elvira1, G. Jones3, V. Sterken4, D. Mimoun5, A. Masters6, Z. Martins6, E. Bunce7, W. Desprats2, P. Garnier2, G. Choblet8, V. Lainey9, F. Westall10, T. van Hoolst11, A. Jäggi12, L. Iess13, A. Longobardo14, F. Tosi14, P. Hartogh15, K. Stephan16, R. Wagner16, N. Krupp15, J. Cooper17, B. Bills18, K. Hand18, S. Vance18, R. Lorenz19, K. Khurana20, S. Kempf21, G. Colins22, E. C. Sittler17, K. Szegő23, M. Wolwrck24 and the JEM team. 1CAB-CSIC-INTA, Spain (prie-
[email protected]). 2IRAP, France (
[email protected]). 3MSSL/UCL, UK. 4ISSI, Switzerland, 5ISAE, France. 6Imperial College, UK. 7U. Leicester, UK. 8U. Nantes, UK. 9IMCCE, France. 10CBM, France. 11ROB, Bel- gium. 12AIUB, Switzerland. 13Univ. Roma La Sapienza, Italy. 14IAPS, Italy. 15MPS, Germany. 16DLR, Germany 17Goddard Space Flight Center, USA. 18Jet Propulsion Laboratory, USA. 19APL/JHU, USA. 20UCLA, USA. 21LASP, Univ. Colorado, USA. 22Wheaton Colleage, USA. 23WIGNER, Hungary. 24IWF, Austria. Introduction: There is a consensus in the planetary strategy. Building on these invaluable assets, the over- community that Europa is the closest and probably the arching goals for JEM is: most promising target to search for extant life in our solar system. The Galileo discovery of a sub-surface “Understand Europa as a complex system responding ocean likely in direct