The structure may sound unremarkable—hardly a standalone object even—but scientists say it is unprecedented given how evenly distributed the universe normally is at this spatial scale.

A previously unknown, hidden internal "void" was recently identified in the Great Pyramid of Giza. The research was published Thursday in the peer-reviewed British journal Nature.

Mysterious Void Discovered in Egypt's Great Pyramid The cavity is the first major inner structure discovered in the pyramid since the 1800s.