Christy (@christycraters) is a planetary geologist currently working on her PhD at Western University, Canada, focusing on impact cratering products and processes. With former experience in Mars spacecraft operations as a HiRISE Downlink Specialist, and a former geologist at the Arizona Geological Survey, Christy has a background in terrestrial as well as planetary geology. Her current field site is the Ries Impact Structure (Germany), where she studies the mineralogy and other aspects of the ejecta deposits. Impact craters provide a window into the subsurface of planetary bodies, with the largest structures exhuming tens of kilometers of any available rock, water, and ice. The ejecta deposits are the result of that exhumation, which redistributes this material across the surface and forms new materials under intense heat and pressure. The deposits at the Ries Impact Structure are of particular interest to her research as they represent analogies to similar impact-generated deposits on Mars. Earth-Mars comparative studies allow researchers like Christy an avenue to extrapolate past Mars climate and habitability, soil production, and subsurface volatile availability.
Hello Astrofolks! – I’m Dr. Jennifer Grier, a Senior Scientist and Education/Communications Specialist at the Planetary Science Institute (HQ Tucson, AZ). My formal education is in the sciences, with a B.S. in Astronomy and a Ph.D. in Planetary Sciences, but I also have 25 years of experience working in science education and outreach. Some science stuff I’ve done: determined the relative ages of lunar rayed craters through optical maturity of ejecta, dated channels on Mars with crater statistics, found the ages of thermal impact events on asteroids by isotopic examination of meteorites, and estimated the time of formation of the Gardnos impact structure on Earth. Some of my specific education work has included: partnering with school systems to develop astronomy curricula, working with science museums to verify exhibit content, professional development workshops for teachers and scientists in education and outreach, and also teaching online/university/community college classes. My current interests include inclusion and equity in STEM careers, the ethics of space exploration, and mental health/disability issues in the sciences. If not doing those things then I’m doing creative writing, such as poetry, essays, fiction, articles and more – my works in progress include a collection of creepy childhood horror poems and a space opera novel trilogy. And that book of essays about the alchemy of science and writing …
You can find my musings and other info in various places like: