The NASA/IPAC Extragalactic Database (NED) is built around a master list of extragalactic objects for which cross-identifications of names have been established, accurate positions and redshifts entered to the extent possible, and basic data collected.
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Keywords:Informal Education,Vocational/Professional Development Education,Higher Education,NSDL,extragalactic objects,oai:nsdl.org:2200/20061003055254775T,Cosmology,NSDL_SetSpec_439869,Space Science,Undergraduate (Upper Division),Astronomy,Graduate/Professional
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