Messier 56
Messier 56
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Messier 56Liên 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 56 http://simbad.u-strasbg.fr/Simbad http://gclusters.altervista.org/cluster_4.php?ggc=... http://arxiv.org/abs/astro-ph/0002118v1 http://www.seds.org/messier/m/m056.html http://server1.wikisky.org/starview?object=Messier... http://www.wikisky.org/?object=Messier+56 http://www.wikisky.org/?object=Messier+56&img_sour... http://www.wikisky.org/?object=Messier+56&img_sour... http://www.wikisky.org/?object=Messier+56&img_sour... http://www.wikisky.org/?object=Messier+56&img_sour...