A stunning new panoramic image of the Milky Way is revealing all sorts of fresh insight. The image shows the center of our Milky Way Galaxy, stretching about 600 light-years across, and reveals never-before-seen details of the Arches cluster, which is densest star cluster in our galaxy. And that bright white splotch in the middle of the image? That's the supermassive black hole at the center of our galaxy, which is illuminated on all sides.