Professor Jolliff’s research interests include the investigation of planetary materials, conditions of mineral and rock formation, and how these materials change over time in response to planetary-scale processes such as volcanism, impacts, and space weathering. His research includes sample analysis, surface science, and remote sensing, as well as laboratory studies. As a member of the Lunar Reconnaissance Orbiter Camera science team, he investigates the surface of the Moon, relating what can be seen from orbit to what is known about the Moon through the study of lunar meteorites and Apollo samples. Investigations relating to Mars include study of the geologic materials analyzed with rovers, martian meteorites, and terrestrial analogs. These studies seek to understand the mineralogic, petrologic, and geochemical relationships, and formation conditions of planetary materials.