Astronomy
The Large-Scale Structure of Galaxy Clusters and Superclusters
Quick fact
The largest known structure in the observable universe is the Hercules–Corona Borealis Great Wall, a supercluster complex stretching over 10 billion light-years across.
Why this is interesting
Look up at a clear night sky and you see countless stars—but did you know that even the galaxies themselves are arranged into a vast, web-like pattern spanning billions of light-years?