1. The Johns Hopkins University Applied Physics Laboratory Laurel Maryland USA
2. Planetary Geodynamics LaboratoryNASA Goddard Space Flight Center Greenbelt Maryland USA
3. Planetary Science DirectorateSouthwest Research Institute Boulder Colorado USA
4. Jet Propulsion LaboratoryCalifornia Institute of Technology Pasadena California USA
5. Lamont‐Doherty Earth ObservatoryColumbia University Palisades New York USA
6. Department of Terrestrial MagnetismCarnegie Institution of Washington Washington District of Columbia USA
7. Department of Earth, Atmospheric and Planetary SciencesMassachusetts Institute of Technology Cambridge Massachusetts USA
8. Department of Earth, Environmental, and Planetary SciencesCase Western Reserve University Cleveland Ohio USA
9. Department of PhysicsUniversity of California Santa Barbara California USA
10. Department of Earth, Planetary, and Space SciencesUniversity of California Los Angeles California USA
11. Department of Earth, Ocean and Atmospheric SciencesUniversity of British Columbia Vancouver British Columbia Canada
12. Planetary Science Institute Tucson Arizona USA
13. German Aerospace CenterInstitute of Planetary Research Berlin Germany
14. MIIGAiK Extraterrestrial LaboratoryMoscow State University for Geodesy and Cartography Moscow Russia