Funding Source: National Science Foundation, Department of Defense, Research Corporation – Astrophysical observations reveal that more than 80% of the matter in the Universe is dark. Identifying the new physics of dark matter is a primary scientific target for the 21st century. My group develops detectors to sense dark matter particles as they stream through the laboratory. These particles should strike an atom in the detector, causing it to recoil. By measuring the direction of the resulting recoil, we can build a skymap, as shown above, to learn not only about the physics of dark matter, but also about the structure of the Milky Way galaxy.