Inside Space's Great Wall
This episode reaches out 6 billion light years across space to unlock the secrets of the largest structure ever seen in the Universe. The BOSS Great Wall is a collection of thousands of galaxies packed into a distinctive flattened shape. Can the search for a mysterious invisible particle unlock how the Universe builds a structure so massive? Does a mysterious alien-like creature reveal the Great Wall’s place in an even larger network? And how will a strange, dark force tear down the Great Wall billions of years from now? This episode unpacks the latest discoveries to explain this cosmic mega-structure.