https://en.wikipedia.org/wiki/Eridanus_(constellation) Supervoid
The Eridanus Supervoid is a large supervoid (an area of the universe devoid of galaxies) discovered as of 2007. At a diameter of about one billion light years it is the second largest known void, superseded only by the Giant Void in Canes Venatici. It was discovered by linking a "cold spot" in the cosmic microwave background to an absence of radio galaxies in data of the United States National Radio Astronomy Observatory's Very Large Array Sky Survey.[3] There is some speculation that the void may be due to quantum entanglement between our universe and another.[4][5]
