In geometry, the centre or center of an object is a point in some sense in the middle of the object. If geometry is regarded as the study of isometry groups then the centre is a fixed point of the isometries.
Science Institutions & Research Organizations

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AIUB - Main activities, the observatory, Stardust Mission with items of interest.
Meta Description: [ AIUB's Homepage. AIUB is deeply involved in GPS work (Home of the BERNESE GPS software, CCD astronomy and SLR ]
American Museum of Natural History, Department of Astrophysics - Areas of interest, seminars, events, and staff.
Astronomical Institute - Anton Pannekoek - Annual reports, and groups and projects.
Meta Description: [ Home page of the Astronomical Institute `Anton Pannekoek' of the Universy of Amsterdam, Astronomy, Astrophysics ]
Astronomical Observatory of Padova - Local information, services, and research activities.
Meta Description: [ The main goal of the Astronomical Observatory of Padua is scientific research in Astronomy and Astrophysics ]
Astronomy Unit - Queen Mary, University of London - Postgraduate, personnel, research, seminars, and publications.
Meta Description: [ Welcome to the Astronony Unit of the School of Mathematical Sciences, Queen Mary, University of London ]
Boston University Astronomy Department - Academics, astrophotography, events, facilities, research, and links.
Caltech Astronomy - The department, observatories, academics, research activities, events, resources, and public outreach.
Meta Description: [ Fireworks Splice HTML ]
Caltech Computational Astronomy - Projects, papers, preprints, and links.
Cambridge Institute of Astronomy - Introduction, activities, history, facilities, research, conferences, meetings, seminars, and workshops.
Cornell - Astronomy - Academics, research, facilities, news, events, resources, and special programs.
Danish National Space Center - Departments, projects, people, publications, and data.
Meta Description: [ Testforside til dit websted ]
ESO - Optical Detector Team - Detector systems, documentation, research and development, and members of the team.
Goddard Space Flight Center - News, multimedia, mission, events, and education with information on the earth, sun, and solar system.
Harvard - Smithsonian Center for Astrophysics - Research, events, opportunities, and facilities.
Meta Description: [ The Harvard Smithsonian Center for Astrophysic
s (CfA) is the world's largest and most diverse center for the study of the Universe, comprising the astronomy and astrophysics programs of two renowned scientific institutions: the Smithsonian Institution and Harvard University. ]
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IASF-BO - Activities, public outreach, seminars, thesis, and resources.
Meta Description: [ IASF is a non-profit state-funded
research institute whose activities are mainly devoted to astronomy and
astrophysics. The main research projects of our institute are
observations in the microwaves, infrared, optical, X-ray and gamma ray
energy bands, observations of cosmic rays, interpretation ... ]
Institute of Astronomy - Features the City Center Branch with emphasis on solar and stellar physics and the Hönggerberg Campus Branch with emphasis on extragalactic astronomy and cosmology.
Institute of Astronomy - University of Latvia - Research, facility, history, and links.
Interferometry Center of Excellence - About ICE, staff, projects, planet quest, and the lab.
Meta Description: [ Nasa JPL projects involving Interferometry ]
Laboratory for Space Sciences - Research, publications, news, members, and links.
Meta Description: [ Laboratory for Space Sciences at Washington University in St. Louis, MO, USA.
Interdisciplinary (Physics, Earth and Planetary Science, Chemistry, Astronomy) research group for the laboratory analysis
of extraterrestrial materials. ]
Life and Planets Astrobiology Center - Calendar, news, program overview, pictures, the proposal, organization chart, publications and presentations, and links.
LTP Research Program - Lunar observing summary, links, observers needed, manual, reporting form, updates, programs, correlation studies, fact sheets, and newsletters.
N-Body Shop - Participants, gallery, software exchange site, computing resources, and the graduate program.
Oxford Astrophysics - Theoretical astrophysics, people, graduate study, and seminars.
Meta Description: [ Oxford Astrophysics: (none) ]
Physics, Mathematics, and Astronomy at Caltech - Information on each of the departments.
Princeton University - Department of Astrophysical Sciences - Academics, research, library, publications, events, news, computing and telescopes, and links.
Space Mechanics Group - Main projects, information services, and publications.
Sternberg Astronomical Institute - AstroNet, Crimean Observatory, Astronomical Databases, Russian Astronomical Network, The WebMuseum network.
Swinburne - Centre for Astrophysics and Supercomputing - Astrophysics, supercomputing, virtual reality, astrotour, and astronomy online.
U.S. Naval Observatory - Astronomical Applications Department - Data services, FAQ, publications, software and research.
Meta Description: [ The Astronomical Applications Departmentof the U.S. Naval Observatory computes, from fundamental astronomicalreference data, the position, brightness, and other observablecharacteristics of celestial bodies, as well as the circumstancesof astronomical phenomena. This information is of criticalim... ]
UA Imaging Technology Laboratory - Projects, technologies, detector characterization program, FAQ, news, and links.
UCO/Lick Observatory - Detector Development Laboratory - Develops CCDs and other sensors for astronomical use.
Meta Description: [ UCO/Lick Observatory Detector Development Laboratory ]
UCSB Astrophysics and Cosmology - Research, people, academics, events, and links.
UCSC - Department of Astronomy and Astrophysics - Research, graduate and undergraduate studies, talk schedule, courses, and links.
University of California at Berkeley - Astronomy Department - Research, student information, calendar, resources, and links.
University of Chicago - Department of Astronomy and Astrophysics - Research, academics, outreach, general information, and news.
University of Helsinki - Department of Astronomy - About the observatory, presentations, research, publications, educations, and services.
University of Illinois at Urbana-Champaign - Astronomy - Academics, research, talks and lectures, publications and preprints, resources, and links.
Meta Description: [ University of Illinois Department of Astronomy: research, publications, education, people, academia, public outreach, links ]
University of Nottingham - Astronomy Group - Information, contact details, research information and useful astronomy links.
Meta Description: [ Homepage of the Nottingham Centre for Astronomy and Particle Theory, including contact details, research information and useful links ]
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