The Sloan Great Wall is an immense cosmic structure composed of galaxy superclusters spanning approximately 1.37 billion light-years, making it one of the largest observed structures in the universe. Its existence challenges Lambda-CDM cosmology because structures of this magnitude should not have had sufficient time to assemble through hierarchical gravitational clustering since the Big Bang, given the constraints on structure formation rates imposed by dark matter dynamics and the finite age of the universe. The scale of the Sloan Great Wall approaches or exceeds the theoretical homogeneity scale predicted by the cosmological principle, suggesting either that the universe is less homogeneous than assumed or that structure formation mechanisms are not fully understood within the standard model (Gott et al. 2005; Park et al. 2012).