AI Summary

Seven billion light‑years from Earth astronomers have identified an unexpected galaxy cluster composed of two regions currently colliding. The combined mass of the system exceeds two quadrillion solar masses, making it extraordinarily massive for its age. Because of its size, the distant structure has been nicknamed El Gordo, meaning “the Fat One.” Its sheer scale at such an early cosmic epoch raises questions about how a supercluster of this magnitude could form so soon after the Big Bang.

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