| 1 (84) | Carnegie Institution for Science * | USA |  |
| 2 (92) | Canadian Institute for Advanced Research | CAN | |
| 3 (112) | Simons Foundation | USA | |
| 4 (146) | Kavli Institute for Particle Astrophysics and Cosmology | USA | |
| 5 (182) | Southwest Research Institute | USA | |
| 6 (196) | Institute for Advanced Study | USA | |
| 7 (217) | Universities Space Research Association | USA | |
| 8 (309) | SETI Institute | USA | |
| 9 (317) | Woods Hole Oceanographic Institution | USA | |
| 10 (392) | Planetary Science Institute | USA | |
| 11 (423) | University Corporation for Atmospheric Research | USA | |
| 12 (481) | Space Science Institute | USA | |
| 13 (593) | Perimeter Institute for Theoretical Physics | CAN | |
| 14 (714) | Lowell Observatory | USA | |
| 15 (1117) | SRI International | USA | |
|
