Thực đơn
Messier 55 Tham khảoThực đơn
Messier 55 Tham khảoLiên quan
Messier 87 Messier 5 Messier 77 Messier 102 Messier 15 Messier 110 Messier 4 Messier 100 Messier 74 Messier 95Tài liệu tham khảo
WikiPedia: Messier 55 http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=... //arxiv.org/abs/0801.4511 //arxiv.org/abs/1008.2755 //arxiv.org/abs/1011.0831 //arxiv.org/abs/1108.4402 //doi.org/10.1051%2F0004-6361:20079082 //doi.org/10.1088%2F0004-6256%2F140%2F6%2F1830 //doi.org/10.1088%2F0004-637X%2F742%2F1%2F51 https://books.google.com/books?id=ymt9nj_uPhwC&pg=... https://ui.adsabs.harvard.edu/abs/1927BHarO.849......