
The Pinwheel Galaxy has a Milky Way look and at 170,000 light years across, pretty close to a Milky Way size. At 21 million light years away, it’s relatively close to us by galactic standards, and it’s conveniently staring at us face-on. In 2006, NASA and ESA stitched Hubble Telescope shots of the galaxy together into the most detailed galaxy image yet.