| 1 (5) | National Aeronautics and Space Administration * | USA |  |
| 2 (24) | NASA Goddard Space Flight Center | USA | |
| 3 (28) | National Oceanic and Atmospheric Administration | USA | |
| 4 (32) | Jet Propulsion Laboratory | USA | |
| 5 (42) | Smithsonian Institution * | USA | |
| 6 (62) | Harvard-Smithsonian Center for Astrophysics | USA | |
| 7 (69) | United States Geological Survey | USA | |
| 8 (87) | National Center for Atmospheric Research | USA | |
| 9 (161) | NASA Ames Research Center | USA | |
| 10 (168) | Space Telescope Science Institute | USA | |
| 11 (177) | United States Department of Agriculture | USA | |
| 12 (193) | Lawrence Berkeley National Laboratory * | USA | |
| 13 (233) | Los Alamos National Laboratory * | USA | |
| 14 (279) | NASA Langley Research Center | USA | |
| 15 (326) | US Environmental Protection Agency | USA | |
| 16 (345) | Sandia National Laboratories, New Mexico | USA | |
| 17 (364) | Pacific Northwest National Laboratory | USA | |
| 18 (395) | Infrared Processing and Analysis Center | USA | |
| 19 (404) | Oak Ridge National Laboratory | USA | |
| 20 (407) | Oak Ridge Institute for Science and Education | USA | |
| 21 (428) | U.S. Department of Energy * | USA | |
| 22 (436) | US Naval Research Laboratory | USA | |
| 23 (444) | NASA Marshall Space Flight Center | USA | |
| 24 (456) | Brookhaven National Laboratory * | USA | |
| 25 (460) | Lawrence Livermore National Laboratory * | USA | |
| 26 (497) | National Radio Astronomy Observatory Charlottesville | USA | |
| 27 (513) | NASA Johnson Space Center | USA | |
| 28 (570) | National Energy Technology Laboratory | USA | |
| 29 (591) | SLAC National Accelerator Laboratory | USA | |
| 30 (601) | NASA Goddard Institute for Space Studies | USA | |
| 31 (602) | National Institute of Standards and Technology * | USA | |
| 32 (615) | Fermi National Accelerator Laboratory | USA | |
| 33 (642) | Glenn Research Center | USA | |
| 34 (654) | United States Fish and Wildlife Service | USA | |
| 35 (726) | Argonne National Laboratory | USA | |
| 36 (840) | National Radio Astronomy Observatory, Socorro | USA | |
| 37 (844) | US National Science Foundation * | USA | |
| 38 (941) | American Museum of Natural History | USA | |
| 39 (953) | U.S. Air Force | USA | |
| 40 (996) | National Renewable Energy Laboratory | USA | |
| 41 (1143) | Subaru Telescope | USA | |
| 42 (1382) | Joint Institute for Laboratory Astrophysics | USA | |
| 43 (1409) | World Bank United States | USA | |
| 44 (1464) | Smithsonian National Museum of Natural History | USA | |
| 45 (1476) | University of Maryland, Center for Environmental Science | USA | |
| 46 (1484) | Princeton Plasma Physics Laboratory | USA | |
| 47 (1565) | Smithsonian Environmental Research Center | USA | |
| 48 (1644) | U.S. Army * | USA | |
| 49 (1689) | National High Magnetic Field Laboratory | USA | |
| 50 (1826) | Idaho National Laboratory | USA | |
| 51 (2118) | Field Museum Natural History | USA | |
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