Glossary of Astronomy
http://nedwww.ipac.caltech.edu/level5/Glossary/Glossary_index.html
nedwww.ipac.caltech.edu - A glossary of the terminology of astronomy.
http://nedwww.ipac.caltech.edu/level5/Glossary/Glossary_index.html
nedwww.ipac.caltech.edu - A glossary of the terminology of astronomy.