For a long time, scientists have thought the distribution of matter was evenly spread throughout the observable universe. It's the bedrock of cosmology. Or so we thought.

Researchers discovered a colossal arc of galaxies that spans an unconscionably vast distance of more than 3 billion light-years in a distant corner of the universe, according to a virtual briefing of the American Astronomical Society on June 7.

This could fundamentally "overturn cosmology as we know it," said Alexia Lopez, a cosmologist at the virtual briefing, in a Science News report. "Our standard model, not to put it too heavily, kind of falls through."

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