1. Morton K. Blaustein Department of Earth and Planetary Sciences; Johns Hopkins University; Baltimore MD USA
2. Department of Earth and Planetary Sciences; Harvard University; Cambridge MA USA
3. School of Earth and Space Exploration; Arizona State University; Tempe AZ USA
4. Aeolis Research; Pasadena CA USA
5. Cornell Center for Astrophysics and Planetary Science; Cornell University; Ithaca NY USA
6. Planetary Science Institute; Tucson AZ USA
7. Department of Earth & Planetary Sciences; University of California Santa Cruz; Santa Cruz CA USA
8. Jet Propulsion Laboratory; California Institute of Technology; Pasadena CA USA
9. Deceased 26 April 2017