1. Center for Astrophysics | Harvard and Smithsonian, Cambridge, Massachusetts, United States
2. NASA - Goddard Space Flight Center, Greenbelt, Maryland, United States
3. Lawrence Livermore National Laboratory, Livermore, California, United States
4. The University of Chicago, Department of Astronomy and Astrophysics, Chicago, Illinois, United States
5. Lockheed Martin Space, Palo Alto, California, United States