This website, from the National Radio Astronomy Observatory (NRAO), is an image gallery of the enormous mass at the center of the Milky Way galaxy. Each image is accompanied by a several-paragraph explanation. Links to different resolution images are also available.
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Keywords:Informal Education,Higher Education,NSDL,Undergraduate (Upper Division),Galactic center,Milky Way,Undergraduate (Lower Division),Massive object,NRAO,Astronomy Image,High School,NSDL_SetSpec_439869,Space Science,oai:nsdl.org:2200/20070803045754062T,Astronomy
Access Privileges:Public - Available to anyone
License Deed:Creative Commons Attribution Non-Commercial Share Alike