"In a fascinating new study for Nature, a team of scientists mapped thousands of galaxies in our immediate vicinity, and discovered that the Milky Way is part of a jaw-droppingly massive “supercluster” of galaxies that they named Laniakea.
This structure is much, much, much bigger than astronomers had previously realized. Laniakea contains more than 100,000 galaxies, stretches 500 million light years across, and looks something like this (the Milky Way is just a speck located on one of its fringes on the right):
It’s hard to wrap one’s head around how enormous this is. Each of those points of light is an individual galaxy. Each galaxy contains millions, billlions, or even trillions of stars. Oh, and this all is just our little local corner of an even broader universe. There are many other galaxy superclusters out there.
So how did the researchers figure out this structure existed — and how did they distinguish it from other superclusters?
Keep reading at Vox
Fascinating! But still not as big as the Universe in my head.