Saoussen Belhadj-aissa, Eric Fielding, Zhen Liu, Ekaterina Tymofyeyeva, Emre Havazli, Paul Rosen, NASA Jet Propulsion Laboatory, California Institut of Technology, United States; Mark Simons, California Institut of Technology, United States; Danielle Lindsay, Roland Burgmann, University of California, Berkeley, United States; Gerald Bawden, NASA HQ, Washington D.C, USA, United States