1. Planetary Systems Laboratory Solar System Exploration Division NASA Goddard Space Flight Center Greenbelt MD USA
2. Department of Astronomy Center for Research and Exploration in Space Science & Technology (CRESST II) University of Maryland College Park MD USA
3. Space Science Institute Boulder CO USA
4. Royal Belgian Institute for Space Aeronomy BIRA‐IASB Brussels Belgium
5. School of Physical Sciences The Open University Milton Keynes UK
6. Instituto di Astrofisica e Planetologia Spaziali IAPS‐INAF Rome Italy
7. Instituto de Astrofisica de Andalucia IAA‐CSIC, Glorieta de la Astronomia Granada Spain