Imagine standing in the emptiest place the universe has to offer, a stretch of cosmic ocean so vast that light takes tens of millions of years to cross it, and yet still finding company. That is the puzzle behind a new study built on the Calar Alto Void Integral field Treasury surveY, or CAVITY,...

Source: [Phys.org](https://phys.org/news/2026-07-galaxy-groups-universe-emptiest.html)

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