Cygnus Loop: References & Edit History
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Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Add new Web site: Center for Astrophysics | Harvard & Smithsonian - The Cygnus Loop. | Aug 05, 2019 | ||
| Article revised and updated. | Feb 26, 2009 | ||
| Added new Web site: Far Ultraviolet Spectroscopic Explorer - Cygnus Loop. | Oct 22, 2007 | ||
| Article revised and updated. | Mar 09, 2007 | ||
| Article added to new online database. | May 27, 1999 |
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