What is hercules-corona borealis great wall?

The Hercules-Corona Borealis Great Wall is the largest known structure in the observable universe. It is a galaxy filament, a vast collection of galaxies bound together by gravity, and it's estimated to be about 10 billion light-years long.

• Discovery: It was discovered in November 2013 by István Horváth, Jon Hakkila, and Zsolt Bagoly, through the analysis of gamma-ray bursts (GRBs).

• Size and Scale: Its sheer size is staggering, covering roughly 1/6th of the observable universe. This enormous scale challenges our understanding of the limits of structure formation in the universe, as structures of this size were not thought to be possible according to current cosmological models.

• Composition: The wall is composed of a concentration of galaxies, and the detection of these galaxies was done through mapping the location of GRBs.

• Challenges to Cosmology: The existence of the Hercules-Corona Borealis Great Wall poses a challenge to the Cosmological Principle, which assumes that the universe is homogeneous and isotropic on large scales. Structures like this suggest that the universe might be more non-uniform than previously thought.

• Location: It is located in the constellations Hercules and Corona%20Borealis.

• Gamma-Ray Bursts (GRBs): GRBs are highly energetic explosions that are associated with the collapse of massive stars or the merger of neutron stars. Since very luminous GRBs can be seen across vast distances, the locations of GRBs were used to trace concentrations of matter, and hence to identify the Great Wall.