Big Void Is Universe's Largest Structure

A really big void spanning 1.8 billion light-years across is the largest known structure in the universe, astronomers say. Called the "supervoid," scientists have been searching for an answer to explain the area for years. The team who discovered it at the University of Hawaii at Manoa call it possibly "the largest individual structure ever identified by humanity." They were searching for the void because they believe it to be the reason that part of the sky is abnormally cold.