1. NASA Marshall Space Flight Center; Huntsville Alabama USA
2. Wellesley College; Wellesley Massachusetts USA
3. Department of Astronomy; Mount Holyoke College; South Hadley Massachusetts USA
4. Department of Earth, Atmospheric, and Planetary Sciences; Purdue University; West Lafayette Indiana USA
5. Department of Earth and Planetary Sciences; University of Tennessee Knoxville; Knoxville Tennessee USA
6. Department of Astronomy, Whitin Observatory; Wellesley College; Wellesley Massachusetts USA