1. Department of Climate and Space Sciences and Engineering University of Michigan Ann Arbor MI USA
2. Planetary Science Institute Tucson AZ USA
3. Applied Physics Laboratory The Johns Hopkins University Laurel MD USA
4. Office of Space Research and Technology Academy of Athens Athens Greece
5. Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing National Observatory of Athens Penteli Greece
6. Department of Physics and Astronomy University of Iowa Iowa City IA USA