Our Milky Way contains some 400 billion stars, spanning 100,000 light years in diameter. Yet compared to other galaxies, it’s not even especially large. In our own local group, the Andromeda galaxy is significantly larger, reaching 220,000 light years across. But the largest and most massive galaxies aren’t spirals, but supergiant ellipticals, like NGC 4874 in the Coma Cluster, extending for 5.5 million light years.
What’s The Largest Galaxy In The Universe?
