The Giant Arc is a claimed large-scale structure discovered in June 2021 that spans 3.3 billion light years. This structure of galaxies exceeds the 1.2 billion light year size threshold of the currently accepted model of cosmology, potentially challenging the cosmological principle that at large enough scales the universe is considered to be the same everywhere (homogeneous) and in every direction (isotropic).
The Giant Arc is a claimed large-scale structure discovered in June 2021 that spans 3.3 billion light years. This structure of galaxies exceeds the 1.2 billion light year size threshold of the currently accepted model of cosmology, potentially challenging the cosmological principle that at large enough scales the universe is considered to be the same everywhere (homogeneous) and in every direction (isotropic).
Source: Wikipedia "Giant Arc" · CC BY-SA 4.0
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