Welcome.  I am a Research Scientist at JPL & Caltech. I work on observational cosmology, galaxy formation and evolution, and the nature of the dark matter that fills the universe. For my work, I design and use panchromatic surveys that combine diverse ground- and space-based observations.  Data from the  Hubble and Spitzer Space telescopes are extremely important parts of this.  I also work on strong gravitational lensing, a remarkable phenomenon in nature that can be used to study the otherwise invisible structure of matter in galaxies, both luminous and dark.  Strong lensing creates powerfully magnified images of distant objects that would be difficult or impossible to otherwise study. I have discovered or co-discovered more than one hundred galaxy-scale strong lenses, and have developed how future strong lensing observations can be used to study the nature of dark matter. I am the principal investigator of a mission concept, OMEGA, that would be dedicated to such observations.

There are often opportunities for NASA Postdoctoral or Graduate Student Fellowships, several undergraduate apprenticeship programs, and other ways of working with me or my group.  Email or stop by!