Jeffrey E. Moersch is Professor of Planetary Science at at the University of Tennessee, Knoxville. He holds degrees from Cornell University (B.A. and Ph.D.) and Arizona State University (M.S.). His research focuses on remote sensing, planetary surface geology, instrument development, and terrestrial analog field work. He has served on the science teams for many NASA spacecraft missions, including the Mars Exploration Rovers, Mars Science Laboratory, and Mars Odyssey. Along with Professor McSween, he originally developed the planetary geology course from which this book is derived. Professor Moersch has authored and co-authored more than eighty peer-reviewed scientific articles and book chapters, and served for five years as the Mars editor for the scientific journal Icarus.