A spiral galaxy about twice our size, but a spittin' image. If you don't see us we are 2/3rds the way out the second spiral arm in the 'Goldylock's' zone, a very safe spot away from super novas, etc. 
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> http://www.physorg.com/news/2011-05-spiral-galaxy-resembles-milky.html-Very pristine spiral galaxies are turning out to be very special, a very small percentage of all the galaxies. The Earth is a special planet. Could one make the case that life only appears in special spiral galaxies on special planets, and that we are super special in our place in the universe?-http://www.newscientist.com/article/mg21028161.300-slim-and-beautiful-galaxies-too-good-to-be-true.html?full=true