The KBC Void our entire super-cluster is within is about 2 billion light years across... https://en.wikipedia.org/wiki/KBC_Void https://en.wikipedia.org/wiki/K

The KBC Void our entire super-cluster is within is about 2 billion light years across... https://en.wikipedia.org/wiki/KBC_Void https://en.wikipedia.org/wiki/KBC_Void