Mullard Space Science Observatory - Mullard Space Science Laboratory of the University College London. Research and postgraduate teaching in astrophysics, solar physics, plasma physics, climate physics, and detector physics.

Theoretical Astrophysics Center in Copenhagen - Research center in Denmark on the structure of space, galaxies, and stars.

Harvard College Observatory - Research observatory for astronomy and astrophysics. Founded in 1839.

Harvard-Smithsonian Center for Astrophysics - Collaboration between Harvard College Observatory and the Smithsonian Astrophysical Observatory

Rice University - Department of Space Physics and Astronomy.

Smithsonian Astrophysical Observatory - Astrophysical research facility located in Cambridge, Massachusetts.

Max-Planck-Institut fuer Astrophysik, Garching - Prominent research institution in astrophysics.

Laboratory for High-Energy Astrophysics - Scientists at NASA's Goddard Space Flight Center laboratory for high-energy astrophysics study some of the most extreme phenomena in the Universe.

Joint Center for Astrophysics - Collaboration between the Laboratory for High-Energy Astrophysics and the University of Maryland - Baltimore County.