In One Sentence: 
I use large ground-based telescopes (including Magellan, Subaru, the LBT, and Gemini South) equipped with a technology called adaptive optics that corrects for the blurring effects of the Earth’s atmosphere to search for planets around other stars (exoplanets) and the disks of gas and dust that form them (circumstellar disks).
For more about what all that means and why I think it’s interesting and important work, please see the links at right. “Big Picture” will give you a brief intro to relevant aspects of the field of exoplanet research and the “Research Projects” page gives more specifics about my work.
Recent Result: Images of a Growing Planet
A “News and Views” article explaining the significance
University of Arizona Press Release
My ADS Entries
My Google Scholar Page