Dr. Shawn D. Domagal-GoldmanShawn D. Domagal-Goldman, Ph.D. is currently a Research Space Scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.
Shawn’s research has focused on the modeling of geochemical cycles and the resulting signatures on planets — such as the Archean Earth — without oxygenic photosynthesis. At the molecular level, he has modeled iron isotope fractionations that have been used as a proxy for ocean redox conditions and the presence of iron-utilizing metabolisms. At the global level, he has developed a new conceptual model for how an organic haze layer could have impacted the Earth’s surface chemistry, climate, and biosphere prior to the rise of oxygen.
His current research project is to model the Archean Earth as an extrasolar planet, so that we can better characterize planets without atmospheric oxygen. He is also developing coupled biogeochemistry, photochemistry, and climate models that will function for a variety of planetary redox conditions. This will improve our understanding of the evolution of Earth’s biogeochemical cycles, and our ability to remotely characterize extrasolar planets.
Shawn’s papers include A Revised, Hazy Methane Greenhouse for the Archean Earth, Organic haze, glaciations and multiple sulfur isotopes in the Mid-Archean Era, Would contact with extraterrestrials benefit or harm humanity? A scenario analysis, Habitable Zones Around Main-Sequence Stars: New Estimates, The Astrobiology Primer: An Outline of General Knowledge, Using Biogenic Sulfur Gases as Remotely Detectable Biosignatures on Anoxic Planets, Habitability of Planets Orbiting Cool Stars, and Redox State of the Neoarchean Earth Environment.
Shawn earned his B.S. in Physics at the University of Rochester in 2001. He earned his M.S. in Earth and Environmental Sciences at the University of Rochester in 2002. He earned his Ph.D. in Astrobiology and Geosciences at The Pennsylvania State University in 2007 with the dissertation Modeling Novel Isotopic Proxies for the Oxygenation of the Earth’s Surface.
Read his LinkedIn profile.