Last Revision 1/19/2011

Adler Planetarium
Brookhaven National Laboratory (BNL)
California Institute of Technology
Carnegie Mellon University
Chile
Cornell University
Drexel University
Fermi National Accelerator Laboratory
George Mason University
Google, Inc.
Harvard-Smithsonian Center for Astrophysics
Institut de Physique Nucleaire et de Physique des Particules (IN2P3)
Johns Hopkins University
Kavli Institute for Particle Astrophysics and Cosmology (KIPAC) - Stanford University
Las Cumbres Observatory Global Telescope Network, Inc.
Lawrence Livermore National Laboratory (LLNL)
Los Alamos National Laboratory (LANL)
National Optical Astronomy Observatory*
National Radio Astronomy Observatory
Princeton University
Purdue University
Research Corporation for Science Advancement*
Rutgers University
SLAC National Accelerator Laboratory
Space Telescope Science Institute
Texas A & M University
The Pennsylvania State University
The University of Arizona*
University of California at Davis
University of California at Irvine
University of Illinois at Urbana-Champaign
University of Michigan
University of Pennsylvania
University of Pittsburgh
University of Washington*
Vanderbilt University