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Speaker: Doug Hemingway, Assistant Research Professor, University of Texas Institute for Geophysics
Host: Sean Gulick
Title: Icy ocean world interiors—techniques and implications
Abstract: The discovery of icy ocean worlds within our own solar system has raised several important questions. Might these worlds, with their potentially habitable subsurface oceans, present our most promising opportunity for discovering life beyond Earth? More basically, how do we know the extent of these internal oceans, or that they are even present at all? Are these oceans a persistent or transient phenomenon? With an emphasis on Saturn’s small but surprisingly active moon Enceladus, I will show how, even with limited topography and gravity field information, we can place constraints on the interior structures and thermal states of these fascinating little worlds. At the same time, however, I will show that there are many important questions that remain open.
Biography: Doug Hemingway is an Assistant Research Professor at the University of Texas Institute for Geophysics. His research centers on planetary geophysics, with emphasis on planetary magnetism and icy ocean world interiors. After his undergraduate degree in Systems Design Engineering from the University of Waterloo, he worked for several years as a space robotics engineer, helping to build the International Space Station. He then transitioned into research in planetary science, completing a PhD at the University of California Santa Cruz and postdoc fellowships at UC Berkeley and at the Carnegie Institution for Science in Washington DC before finally joining UT in December 2022.