Although scientists think most of the universe is composed of dark matter, this material does not emit light, making it difficult to detect. Now, NASA’s Hubble Space Telescope is giving us a rare look into this dark universe by uncovering a dark-matter-dominated, failed galaxy that did not form stars. Called Cloud-9, this hydrogen cloud is a fossil remnant from the early days of the universe. For many years, scientists sought evidence of such a phantom object. But only when they turned Hubble’s sharp vision toward Cloud-9 could they definitively confirm that this cloud was indeed a starless relic of a failed galaxy.