Dr. Tanya Harrison calls herself a “professional martian.” She has spent over a decade working as a scientist and in mission operations on multiple NASA Mars missions, including the Curiosity and Opportunity rovers. Her specialty lies in geomorphology: the study of a planet’s evolution based on its surface features. Before Mars, however, Tanya had her head in the stars as an astronomer studying the metal content of star clusters and recurring novae systems. She holds a Ph.D. in Geology from the University of Western Ontario, a Masters in Earth and Environmental Sciences from Wesleyan University, and a B.Sc. in Astronomy and Physics from the University of Washington. Tanya is also an advocate for advancing the status of women in science and for accessibility in the geosciences. You can find her prolifically tweeting about the Red Planet—and her experiences with both #WomenInSTEM and #DisabledInSTEM as @tanyaofmars. Danny Bednar is Canada’s second-best Space Geographer and researcher with the Canadian Space Agency. He is also an Assistant Professor in the Department of Geography and the Environment at Western University in London, Ontario, Canada. His areas of interest include the use of satellites in addressing climate change and the robotic exploration of our solar system for scientific purposes. He holds a Ph.D. in Geography, with a focus on climate change policy from Western University, where he has also been teaching about space exploration since 2012. Danny is the founder of the international project group for Ethics and Human Rights in the Space Sector and has published papers in various academic and scientific journals, including Planetary and Space Science and The Journal of Environmental Policy and Planning.