Spiral Galaxies

See what experts call the largest spiral galaxy in the universe
Jan 22, 2013

The spiral galaxy we live in, known as the Milky Way, is a massive place. From outer arm to outer arm, it's a whopping 100,000 light years across. But using a variety of astronomical instruments, scientists have now confirmed there's a spiral galaxy more than five times bigger than the one we live in, and now we can see what it looks like.