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Star tracked as it orbits the Milky Way's black hole

Read more: http://www.newscientist.com/article/dn16247?DCMP=youtube Over a period of 16 years, astronomers tracked stars as they orbited the Milky Way's central region, which is thought to harbour a colossal black hole. One star, called S2, was observed over its complete 15.8-year-long orbit. The star approached the black hole to within one light day, which is only about five times the distance between Neptune and the Sun. (Courtesy of ESO)
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