A newly discovered crescent of galaxies spanning 3.3 billion light-years is one of the world’s largest known structures, challenging astronomers’ most fundamental assumptions about the universe.

A newly discovered crescent of galaxies spanning 3.3 billion light-years is one of the world’s largest known structures, challenging some of astronomers’ most fundamental assumptions about the universe.

The epic arrangement known as the Giant Arc is made up of galaxies, galaxy clusters, and a lot of gas and dust. It is located 9.2 billion light-years away and stretches across roughly a 15th of the observable universe.

The Giant Arc. Grey regions show areas that absorb magnesium, which reveals the distribution of galaxies and galaxy clusters. The blue dots are background quasars, sometimes known as spotlights. (Image credit: Alexia Lopez/UCLan)

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https://www.thespaceacademy.org/2022/07/giant-arc-stretching-33-billion-light.html