Hercules-Corona Borealis Great Wall was already known to cover an area that's 10 billion light-years wide by 7.2 billion light-years and be almost 1 billion light-years thick! For context, that is large enough to fit over 94,000 Milky Way galaxies placed side by side along the Great Wall's longest side, which stretches out for around 10% of the total width of the entire observable universe.