Stephen R. Schwartz received the Bachelor of Arts degree in astronomy and philosophy from Columbia University, New York, NY, USA, and the Ph.D. degree in astronomy/astrophysics from the University of Maryland at College Park, College Park, MD, USA. After three years with the Department of Theoretical and Observational Planetology, Observatoire de la Côte d’Azur, Nice, France, he is currently with the Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA, which is well suited to his strong interests in space sciences and exploration. He currently serves on the science teams of two asteroid sample-return missions, as a Participating Scientist on NASA’s OSIRIS-REx mission and as a Co-Investigator on multiple instruments of JAXA’s Hayabusa2 mission. His research focus includes studies into the ultralow gravity mechanical environments of small asteroids, the effects of weak cohesion between the constitutive rubble that comprise these bodies, and what this can tell us about the formation histories of asteroids and comets and about the evolutionary history of our solar system.