Louis E. Strigari is a research associate at the Kavli Institute for Particle Physics and Cosmology at Stanford University and the SLAC National Accelerator Laboratory. His research interests include dark matter in astrophysics and particle physics, galactic structure, substructure and dwarf satellites, the search for galactic satellites, direct dark matter detection, neutrino astrophysics, and galactic microlensing. Credit: L. Strigari