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 Selected Astrophysical Data Centers & Services
 
Astrophysical
CATalogs support System (CATS)
Base de
Données Amas de Galaxies X (BAX) [X-Ray Database for Galaxy
Clusters]
Canadian
Astronomy Data Center (CADC)
Centre de
Données astronomiques de Strasbourg (CDS) 
Digitized Sky
Survey
ESO/ST-ECF
Galaxy
On-Line Database Milano Network (GOLDMINE)
Hypercat
International
Virtual Observatory Alliance (IVOA)
 Libraries of Stellar Spectra (Montes: UCM)
Lyon--Meudon Extragalactic Database (LEDA)
LEicester Database and Archive Service (LEDAS)
SIMBAD
Astronomical Database
VAO Data Discovery: DataScope 
SkyView (GSFC)
2
Micron All-Sky Survey (2MASS)
Unified Astronomy
Thesaurus
XMM-Newton Science Archive (XSA)
 
Astrostatistics, Computing and Visualization Tools
 
On-line Astronomy & Astrophysics Literature
 
News Groups and News Letters
 
Astronomy Education and Public Outreach Sites 
 
Professional Societies
 
Index, Meetings & List Services
 
Ground-Based Archives
 
Specialized Extragalactic Sites
- Hubble Deep Field North
 
- Hubble Deep Field South
 
- Redshift Surveys and Databases
 
-  Supernovae
 
- Other Surveys and Extragalactic Databases
 
 
 
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