Limits RegistryPUBLIC RECORD
Limits RegistryThe Boötes Void, discovered in 1981, is a roughly spherical region of space about 330 million light-years across containing dramatically fewer galaxies than its surroundings — one of the largest known voids in the observable universe. Its near-emptiness (fewer than 60 galaxies have been identified within it, versus thousands expected in an equivalent volume) made it an early, striking piece of evidence for the large-scale 'cosmic web' structure of galaxy filaments and voids.
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The Boötes Void, discovered in 1981, is a roughly spherical region of space about 330 million light-years across containing dramatically fewer galaxies than its surroundings — one of the largest known voids in the observable universe. Its near-emptiness (fewer than 60 galaxies have been identified within it, versus thousands expected in an equivalent volume) made it an early, striking piece of evidence for the large-scale 'cosmic web' structure of galaxy filaments and voids.
The greatest diameter of any known cosmic void — a large region of space containing far fewer galaxies than average.
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Permanent ID limitsregistry.com/limits/LR-LARGEST-COSMIC-VOID
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Limits Registry. LR-LARGEST-COSMIC-VOID. Largest known cosmic void. 2026.