Galaxies

What galaxy do we live in? It is as you know the Milky Way. Is the Milky Way the only galaxy in the Universe. Of course, not. There are millions, maybe even billions of galaxies. What is there in those galaxies is the question. A lot of them are different from our galaxy. In fact some galaxies don't have a sun. So now remains the question. What could lie so far away from us in those galaxies. We may never find out.