1. Department of Physics; Ithaca College; Ithaca New York USA
2. Institute for Astronomy; University of Hawaii at Hilo; Hilo Hawaii USA
3. Department of Earth, Atmospheric and Planetary Sciences; Massachusetts Institute of Technology; Cambridge Massachusetts USA
4. Department of Astronomy; Cornell University; Ithaca New York USA
5. Department of Geological Sciences; Brown University; Providence Rhode Island USA
6. Department of Geography and Earth Sciences; Bloomsburg University of Pennsylvania; Bloomsburg Pennsylvania USA