| 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 |
| Institute of Theoretical Astrophysics: One of the main centers for exploration of astrophysics in Oslo, Norway. |
| Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna: Research projects: observations in the microwave, infrared, optical, X-ray and gamma ray energy bands, and observations of cosmic rays. |
| Joint Center for Astrophysics: Collaboration between the Laboratory for High-Energy Astrophysics and the University of Maryland - Baltimore County. |
| Max-Planck-Institut fuer Astrophysik, Garching: Prominent research institution in astrophysics. |
| 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. |
| National Astrophysics and Space Science Programme: A joint venture of various South African universities, open to students from all over Africa. |
| Rice University: Department of Space Physics and Astronomy. |
| Smithsonian Astrophysical Observatory: Astrophysical research facility located in Cambridge, Massachusetts. |
| Theoretical Astrophysics Center in Copenhagen: Research center in Denmark on the structure of space, galaxies, and stars. |
| University of Cambridge - Cavendish Laboratory - Astrophysics Group: A wide-ranging program of research, including the Mullard Radio Astronomy Observatory, situated at Lord's Bridge. Group members, research interests, publications, surveys and catalogues, other resources. |
| University of Cambridge - DAMTP - Astrophysical Fluid Dynamics and Non-linear Patterns: Department of Applied Mathematics and Theoretical Physics. Research, members, seminars, publications. |
| University of Cambridge - IoA - X-Ray Astronomy Group: Institute of Astronomy. The research of the group focuses on active galaxies, clusters of galaxies, elliptical galaxies, and the X-ray background. |
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