Largest structure in the universe
Who
Hercules-Corona Borealis Great Wall
What
10,000,000,000 light year(s)
Where
Not Applicable ()
When

The Hercules-Corona Borealis Great Wall is a massive structure of galaxies measuring around 10 billion light years across. Its existence was discovered by astronomers charting the locations of gamma ray bursts which had been detected by the Swift Gamma Ray Burst mission. Its discovery was announced on 5 November 2013 and it lies around 10 billion light years from Earth.