http://en.wikipedia.org/wiki/Supermassive_black_hole
http://www.environmentalgraffiti.com/sciencetech/supermassive-black-hole-milky-way/6671
http://www.sciencedaily.com/releases/2012/10/121005162822.htm
http://www.latimes.com/news/science/la-sci-black-hole-20121006,0,6352348.story
http://www.space.com/16388-milky-way-black-hole-eats-cloud.html
http://www.einstein-online.info/spotlights/milkyway_bh
http://books.google.ca/books/about/The_Black_Hole_at_the_Center_of_the_Milk.html?id=-mFXKO6wd1gC&redir_esc=y
Star
http://www.csmonitor.com/Science/2012/1004/At-edge-of-black-hole-a-star-Albert-Einstein-would-have-loved
http://news.nationalgeographic.com/news/2012/10/121004-black-hole-milky-way-stars-space-science-einstein/
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