ANSGAR GRESHAKE is the curator of meteorite collections for the Museum für Naturkunde in Berlin where he is also the head of mineralogical preparation facilities. He studies the formation and classification of Martian meteorites, including their phases and metamorphoses, with specific research interest in carbonaceous chondrites. Greshake received his Ph.D. in planetology from Westfälische Wilhelms-Universität Münster. He has not previously served on an Academies’ committee.
GUY LIBOUREL is a professor at the Observatoire de la Côte d'Azur in Nice, France. Prior to this he was at the Centre de Recherches Pétrographiques et Géochimiques in Nancy and is an affiliated professor at the Hawaii Institute of Geophysics and Planetology at the University of Hawaii, Honolulu. He is an experimental cosmochemist whose research focusses on understanding the formation of the first solid in the solar system using high temperature experimental approaches. His current research is centered on thermal and mechanical properties of the regolith on small solar system bodies. He is a co-investigator on NASA’s OSIRIS-Rex and JAXA’s Hayabusa 2 asteroid sample-return missions. He is also the OSIRIS-REx coordinating scientist for sample analysis for mission sample science in Europe. Dr. Libourel obtained his Ph.D. at the Université Paul Sabatier de Toulouse. He has not previously participated on an Academies’ committee.
AKIKO M. NAKAMURA is an associate professor in the Center for Planetary Science at Kobe University where she performs laboratory impact experiments to study the velocity distribution of fragments from ejecta and the ejecta from particulate layers. These experiments are designed to provide insights into the collisional evolution of small solar system bodies and regolith formation processes. She was a co-investigator on the camera system on the Japan Aerospace Exploration Agency’s Hayabusa I asteroid sample-return mission. Dr. Nakamura completed her B.S. in 1988, her M.S., and her Ph.D. in 1993, all at Kyoto University.
FRANÇOIS POULET is an astronomer at the Institute of Space Astrophysics (IAS), a joint research unit of the French National Center of Scientific Research (CNRS) and the Université Paris-Sud. Prior to his position at the IAS, Dr. Poulet worked as a research scientist at the NASA Ames Research Center. He studies Mars and small bodies, and his work includes research on the formation and evolution of planetary surfaces. As Deputy-PI of the MAJIS spectro-imager aboard the JUICE mission, Dr. Poulet also has experience in instrumental development. He received his Ph.D. in celestial mechanics and geodesy from the Department of Space Research at the Observatory of Paris. He has not previously served on an Academies’ committee.
ROBIN PUTZAR is a senior scientist in the Space Technology Group at the Fraunhofer Institute for High-Speed Dynamics (also known as the Ernst-Mach Institute (EMI)) in Freiburg, Germany. Dr. Putzar has led several large studies investigating the effects of hypervelocity impacts on spacecraft components and geological material, including ballistic limit analyses. His research interests include hypervelocity accelerators, and he has led the design of such accelerators at EMI. He was delegate at the Inter-Agency Space Debris Coordination Committee and served on the Program Committee of the European Conference on Space Debris. He is currently chairman of the Aeroballistic Range Association. He has a baccalaureate degree in engineering, sciences from Technology University of Berlin. He has not previously served on an Academies committee.
Kaliat T. Ramesh
KALIAT T. RAMESH is a professor in the Department of Mechanical Engineering at Johns Hopkins University. He is also director of the Center for Advanced Metallic and Ceramic Systems, and director of the Hopkins Extreme Materials Institute. His research interests are in high strain-rate behavior and dynamic failure of materials, nanostructured materials, injury biomechanics and planetary-scale impact problems. He served as a visiting professor at the University of Cambridge. He has published one book, Nanomaterials: Mechanics and Mechanisms; Springer, 2009. After receiving a B.E. from Bangalore University, he continued to Brown University where he completed his M.S. in engineering. He was awarded his Ph.D. and an additional M.S. in applied mathematics from Brown University. Dr. Ramesh completed a postdoctoral fellowship with the Center of Excellence in Advanced Materials at the University of California, San Diego Dr. Ramesh previously served on the NRC Committee on Opportunities in Protection Materials Science and Technology for Future Army Applications.
Norman H. Sleep
NORMAN H. SLEEP (NAS) is a professor of geophysics in the School of Earth, Energy, and Environmental Sciences at Stanford University. Dr. Sleep’s research interests include studying convection at the base of the lithosphere and the interaction of the lithosphere with mantle plume material. He is also currently investigating the microphysics of friction and applying the results to nonlinear attenuation and ground damage by strong seismic waves. Dr. Sleep is a fellow of the American Association for the Advancement of Sciences, the Geological Society of America, and the American Geophysical Union. He has received a number of awards for his work including the James B. Macelwane award, the George P. Woollard Award from the Geological Society of America, and the 2008 Wollaston Medal from the Geological Society of London. Dr. Sleep earned a B.S. in mathematics from Michigan State University and a M.S. and Ph.D. in geophysics from the Massachusetts Institute of Technology. He has previously served on the National Academies’ Committee on Astrobiology and Planetary Science, the Committee on Survey of Surveys: Lessons Learned from the Decadal Survey Process, the Committee on Earth Resources, the Committee on Planetary Biology and Chemical Evolution, and currently serves as the NAS Section 15 liaison.
SHINO SUZUKI is a senior researcher at the Japan Agency for Marine Earth Science and Technology at the Kochi Institute for Core Sample Research (KOCHI) in Japan. She has researched and published dozens of papers on microbial communities. Previously she worked at J. Craig Venter Institute through which she collaborated with the NASA Astrobiology Insititute developing and employing field, laboratory, and modeling approaches aimed at detecting and characterizing subsurface microbial life. She has earned her Ph.D. from the University of Southern California for genomic biology. She has not previously served on an Academies’ committee.
Megan B. Syal
MEGAN BRUCK SYAL is a physicist in the Design Physics Division at Lawrence Livermore National Laboratory (LLNL). Dr. Bruck Syal specializes in experimental and numerical simulation of planetary impacts, including hypervelocity impact experiments (with an emphasis on porous and volatile-rich materials) and modeling of impact events in a variety of shock physics codes. Her published and ongoing research includes: impact delivery of carbon and volatiles to Mercury and the Moon, the excavation of Stickney Crater at Phobos, analysis of impactor- and target-derived vapor plumes using high-speed emission spectroscopy, and giant-impact formation of moons in exoplanetary systems. Additionally, Dr. Bruck Syal is very active in the field of planetary defense, supporting: NASA’s DART mission with simulations of the planned 2022 spacecraft impact at Didymos B, NASA-FEMA Asteroid Impact Tabletop Exercises, and a NASA-NNSA interagency collaboration on hazardous asteroid mitigation case studies. Her planetary defense work focuses on numerical simulation of deflection and disruption techniques, with a particular emphasis on understanding sensitivities to asteroid initial conditions. Previously, Dr. Bruck Syal was a postdoctoral researcher at LLNL (2014-2016), a Ph.D. candidate in the Geosciences Department at Brown University (2009-2014), and a data specialist at the Smithsonian Astrophysical Observatory’s Chandra X-ray Center (2007-2009). She is a recipient of a NASA Earth and Space Science Fellowship, a NASA Group Achievement Award (Deep Impact - EPOXI mission Science Team), and a Brown University Graduate Fellowship. Dr. Syal obtained her Ph.D. in planetary geosciences at Brown University. She has not previously served on an Academies’ committee.
Erin L. Walton
ERIN L. WALTON is an associate professor at MacEwan University. She holds a Discovery Grant awarded by the Natural Science and Engineering Research Council of Canada. The focus of her research is shock metamorphism of astromaterials, with an emphasis on Martian meteorites. Dr. Walton's research interests also encompass the age and formation of terrestrial impact structures, such as the 91 million year old Steen River Impact Crater in Alberta. She earned her Ph.D. from the University of New Brunswick for geology. She has not previously served on an Academies’ committee.