Thiên_hà_Viên_Quy
Thiên_hà_Viên_Quy
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Thiên_hà_Viên_QuyLiên quan
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WikiPedia: Thiên_hà_Viên_Quy http://nedwww.ipac.caltech.edu/ http://chandra.harvard.edu/photo/2001/0167/ http://simbad.u-strasbg.fr/Simbad http://antwrp.gsfc.nasa.gov/apod/ap001204.html //arxiv.org/abs/astro-ph/9709091 //doi.org/10.1086%2F305150 http://iopscience.iop.org/0004-637X/493/2/650/full... http://www.spacetelescope.org/images/html/opo9738c... http://www.wikisky.org/?ra=14.219416666667&de=-65.... https://books.google.com/?id=1r0qvMjSCGAC&pg=SA3-P...