BOSS Supercluster — A Billion Light-Years of Cosmic Power Imagine a structure so vast it stretches one billion light-years across. This is the BOSS Supercluster — the largest known structure in the entire observable universe. It contains over 830 galaxies, bound together by gravity into a colossal thread of the cosmic web. Compared to it, our Milky Way is nothing more than a tiny speck of dust. It was named after the Baryon Oscillation Spectroscopic Survey (BOSS), a project that mapped the large-scale distribution of galaxies in exquisite detail. Its scale is so immense that some scientists speculate a Type III civilization on the Kardashev scale — capable of harnessing the energy of entire galaxies — could theoretically exploit and traverse the whole supercluster. But doing so would take hundreds of thousands of years. Today, the BOSS Supercluster stands as a reminder of just how small we are… and how endlessly vast the universe truly is. Credit: Baryon Oscillation Spectroscopic Survey (BOSS), Sloan Digital Sky Survey;