Josh's research has focused on the processes that have formed the crust and regolith of Mars, the Moon, and Earth analogs. He uses infrared and visible spectral and imaging data returned from orbiting spacecraft and landers to determine the mineralogical, thermophysical, and morphological properties of planetary surfaces. Josh has been involved with spacecraft planning, operations, and science activities for martian and lunar missions since 1995. He is a geologist by training and likes rocks.