Bye, bye, Milky Way


One star has enough momentum to “escape the Milky Way”:http://story.news.yahoo.com/news?tmpl=story&cid=96&e=2&u=/space/20050209/sc_space/helloimustbegoingspeedingstarsettoescapeourgalaxy.

Astronomers suspect that the star once had a companion and was in a rather tight orbit around the central black hole. However, in some exchange of energy that I don’t completely understand, the star brushed a little too closely with the black hole, took some of the orbital energy from its companion, and slingshotted straight toward the edge. The companion is now in a tighter orbit around the central black hole.

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