Image credit:NASA/JPLThe four large moons of Jupiter have a variety of compositions from the rocky Io to the icy Ganymede and Callisto. I have propose a new mechanism that may have lead to this diversity. I also model what measurements can be made by upcoming missions to test different hypotheses.
Image credit:NASA/JHUAPL/SwRINew horizons and ground based telescopes are returning vast amouts of data on Pluto and its planetary neighbors. I work to combine all these sources to better understand the structre and history of Kuiper Belt objects.
Pioneer Venus UV imageOn Venus, sulfur has many forms including forming sulfuric acid clouds. How sulfur moves through the atmosphere and the timescales for change are not well understood. I use modeling to try to understand the newest observational data of how sulfur species vary in both space and time.
Image credit: NASA/JPL-Caltech/Malin Space Science SystemsThe south polar cap of Mars contains enough mass to double the atmospheric pressure. I explore how these deposits formed using a collection of tools including models, observational images, and spaceborne radar.
Image credit:NASA/JPL/University of ArizonaIo is the most volcanically active world in the solar system. The energy souce for this volcanism seems to be tidal dissipation; however, the volcanoes are not where tidal dissipation models predict. My work looks to understand why this discrepancy exists and how future spacecraft observations might help solve this mystery.
Image credit: NASA/JPL-Caltech NASA's GRAIL mission has measured the gravity field of the moon to such high resolution that craters down to 30 km can be studied in detail. I use statistical tests and forward modeling to better understand how impacts modify the lunar crust and what that tells us about the structure of the lunar crust.
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