http://www.counselheal.com/articles/4679/20130402/scientists-solve-riddle-behind-formation-spiral-galaxies.htm
VIDEO A group of astrophysicists from the Harvard-Smithsonian Center for Astrophysics and the University of Wisconsin-Madison say they've resolved a long-standing question: how long do spiral arms in galaxies like our own last?
Scientist Catch A Black Hole Munching On A Giant Planet
http://www.news.com.au/technology/sci-tech/black-hole-wakes-for-a-planet-sized-snack/story-fn5fsgyc-1226611305360
Scientists observing a distant galaxy catch a black hole in the middle of destroying a planet larger than Jupiter. Like virtually every other galaxy in the universe, the Galaxy NGC 4845 has a central black hole.
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