Cambridge Institute of Astronomy University of Cambridge, Institute of Astronomy http://www.ast.cam.ac.uk/IoA/

Oxford Astrophysics University of Oxford's Nuclear and Astrophyics Laboratory. http://www-astro.physics.ox.ac.uk/index.html

Caltech Computational Astronomy The Caltech Computational Astronomy Group uses high-performance parallel computers for analysis of data from many different observatories. http://www.srl.caltech.edu/compastro/

Danish Space Research Institute Includes information about the Danish satellite program, the Spectrum Roentgen Gamma satellite, the Gamma Ray Laboratory, and the Infrared Space Observatory. http://www.dsri.dk/

Princeton University Department of Astrophysical Sciences. http://www.astro.princeton.edu/

Caltech Division of Physics, Mathematics and Astronomy http://www.pma.caltech.edu/

University of Chicago, Department of Astronomy and Astrophysics http://astro.uchicago.edu/

JPL - Jet Propulsion Laboratory Managed for NASA by the California Institute of Technology, JPL is the leading U.S. center for robotic exploration of the solar system. http://www.jpl.nasa.gov/

Goddard Space Flight Center http://www.gsfc.nasa.gov/

University of California at Berkeley Astronomy Department, http://astron.berkeley.edu/home.html

U.S. Naval Observatory Astronomical Applications Department Data services, FAQ on common astronomical phenomena, publications, software and research. http://aa.usno.navy.mil/AA/

Anton Pannekoek Astronomical Institute of the University of Amsterdam. Requires JavaScript. http://www.astro.uva.nl/home2.html

Harvard-Smithsonian Center for Astrophysics (CfA) A joint collaboration between the Harvard College Observatory (HCO) and the Smithsonian Astrophysical Observatory (SAO). http://cfa-www.harvard.edu/

Observatory - University of Helsinki Established in 1834, the observatory takes part in many space projects within the framework of ESA and other international cooperation, including Mars-94, ISO, Spectrum-X-Gamma, and Odin. http://www.astro.helsinki.fi/

Laboratory for Space Sciences at Washington University in St. Louis Interdisciplinary research group for the laboratory analysis for extraterrestrial materials (meteorites, presolar grains, and interplanetary dust). Analytical techniques used include SIMS, SEM, NanoSIMS, TEM, noble gas mass. spectrometers. http://presolar.wustl.edu/

Institute of Astronomy ETH Zürich http://www.astro.phys.ethz.ch/

Astronomisches Institut der Universität Bern Astronomical Institut of the University of Bern. http://www.cx.unibe.ch/aiub/

Swinburne Astrophysics and Supercomputing Centre Astrophysics and Supercomputing http://www.swin.edu.au/astronomy/

University of California, Santa Cruz Department of Astronomy and Astrophysics at UCSC. Site includes descriptions of faculty and student research, information for current and prospective graduate students, and the popular "ask an astronomer" feature. http://www.astro.ucsc.edu/

Caltech Astronomy Astronomy Department of California Institute of Technology. http://www.astro.caltech.edu