1. NASA Jet Propulsion Laboratory California Institute of Technology Pasadena CA USA
2. Department of Physics Lancaster University Lancaster UK
3. Mullard Space Science Laboratory UCL Dorking UK
4. Center for Planetary Sciences UCL/Birkbeck London UK
5. Center for Space Physics Boston University Boston MA USA
6. Department of Climate and Space Sciences and Engineering University of Michigan Ann Arbor MI USA
7. Department of Physics and Astronomy University of Leicester Leicester UK
8. Office for Space Research Academy of Athens Athens Greece