| 1 (93) | Lawrence Berkeley National Laboratory * | USA | |
| 2 (101) | National Aeronautics and Space Administration * | USA | |
| 3 (142) | National Institute of Standards and Technology * | USA | |
| 4 (206) | SLAC National Accelerator Laboratory | USA | |
| 5 (207) | National Renewable Energy Laboratory | USA | |
| 6 (238) | Argonne National Laboratory | USA | |
| 7 (240) | Smithsonian Institution * | USA | |
| 8 (277) | Harvard-Smithsonian Center for Astrophysics | USA | |
| 9 (299) | Joint Quantum Institute | USA | |
| 10 (300) | NASA Johnson Space Center | USA | |
| 11 (316) | Oak Ridge National Laboratory | USA | |
| 12 (333) | United States Geological Survey | USA | |
| 13 (373) | Los Alamos National Laboratory * | USA | |
| 14 (394) | Brookhaven National Laboratory * | USA | |
| 15 (402) | United States Department of Agriculture | USA | |
| 16 (423) | Sandia National Laboratories, New Mexico | USA | |
| 17 (482) | Jet Propulsion Laboratory | USA | |
| 18 (494) | NASA Goddard Space Flight Center | USA | |
| 19 (509) | Pacific Northwest National Laboratory | USA | |
| 20 (561) | Space Telescope Science Institute | USA | |
| 21 (588) | Lawrence Livermore National Laboratory * | USA | |
| 22 (625) | NASA Ames Research Center | USA | |
| 23 (676) | US Food and Drug Administration | USA | |
| 24 (706) | U.S. Army * | USA | |
| 25 (738) | Fermi National Accelerator Laboratory | USA | |
| 26 (755) | US Naval Research Laboratory | USA | |
| 27 (760) | Sandia National Laboratories, California | USA | |
| 28 (775) | Infrared Processing and Analysis Center | USA | |
| 29 (796) | National Radio Astronomy Observatory Charlottesville | USA | |
| 30 (798) | Glenn Research Center | USA | |
| 31 (800) | U.S. Air Force | USA | |
| 32 (803) | Joint Institute for Laboratory Astrophysics | USA | |
| 33 (928) | National Energy Technology Laboratory | USA | |
| 34 (954) | U.S. Department of Energy * | USA | |
| 35 (957) | National High Magnetic Field Laboratory | USA | |
| 36 (966) | Subaru Telescope | USA | |
| 37 (1011) | NASA Marshall Space Flight Center | USA | |
| 38 (1018) | National Research Council Canada * | CAN | |
| 39 (1224) | Thomas Jefferson National Accelerator Facility | USA | |
| 40 (1241) | Ames Laboratory | USA | |
| 41 (1285) | NASA Langley Research Center | USA | |
| 42 (1305) | American Museum of Natural History | USA | |
| 43 (1379) | National Center for Atmospheric Research | USA | |
| 44 (1537) | TRIUMF - National Laboratory for Particle and Nuclear Physics | CAN | |
| 45 (1543) | National Oceanic and Atmospheric Administration | USA | |
| 46 (1570) | National Radio Astronomy Observatory, Socorro | USA | |
| 47 (1684) | Princeton Plasma Physics Laboratory | USA | |
| 48 (1739) | Natural Resources Canada | CAN | |
| 49 (1863) | Idaho National Laboratory | USA | |
| 50 (1880) | US National Science Foundation * | USA | |
|