Terrestrial Planets Asphaug, Glatzmaier, Knittle, Kreslavsky, Lay, Nimmo, Williams

Planetary Interiors
There are few observational constraints on the interiors of planets other than the Earth. One possible avenue is to perform high-pressure experiments on candidate materials, an approach adopted by Knittle and Williams. On the Earth (and the Moon), these experiments can be supplemented by seismological observations, the focus of work by Lay. Finally, theoretical models can help to flesh out likely planetary behaviour: Glatzmaier focuses on modeling the generation of planetary magnetic fields, and Nimmo on how planets and their dynamos have evolved through time.

Mars
Mars is one of the few places in the solar system, along with Earth and Titan, where the surface has been modified by fluid processes. On Mars, evidence for these processes range from the massive, ancient outflow channels, through the mysterious polygonal and patterned ground, to gullies and slope streaks which are forming at the present day. Mars has also been reshaped by impacts, from giant collisions near the start of its history, to small impacts over the last decade. Asphaug, Kreslavsky and Nimmo are all studying the fluid- and impact-driven history of Mars.