1. Mullard Space Science Laboratory, University College London, Dorking, UK.
2. Centre for Planetary Science at UCL/Birkbeck, London, UK.
3. Institute of Planetary Research, German Aerospace Centre (DLR), Berlin, Germany.
4. Space Exploration Institute, Neuchâtel, Switzerland.
5. Joanneum Research, Graz, Austria.
6. Department of Physics, Aberystwyth University, Aberystwyth, UK.
7. Department of Earth and Environmental Sciences, University of St Andrews, St Andrews, UK.
8. Department of Earth and Planetary Sciences, Birkbeck, University of London, London, UK.
9. Space Research Centre, University of Leicester, Leicester, UK.
10. Department of Earth Sciences, Open University, Milton Keynes, UK.
11. Department of Earth Science and Engineering, Imperial College London, London, UK.
12. Department of Physics, University of Oxford, Oxford, UK.
13. European Space Agency, Noordwijk, the Netherlands.
14. Centre for Planetary Science and Exploration, University of Western Ontario, London, Canada.