For the first time, a realm 100 billion times smaller than an atom has been discovered.

For the first time, a realm 100 billion times smaller than an atom has been discovered.

On November 9, 2026, scientists in Cambridge announced that they had reached the smallest scale in the universe ever measured—a realm 100 billion times smaller than an atom—which they have named the "Zeptoverse."

The team used the Large Hadron Collider (LHC) at CERN, which smashes particles together at immense speeds to break them apart and reveal what lies inside. They discovered a particle known as a "beauty quark," which exists for only 1.5 trillionths of a second before vanishing. Yet, within that fleeting moment, they were able to measure its interactions on a scale of one billionth of a trillionth of a meter—a "zeptometer." The ultimate goal of this research is to gain an understanding of dark matter, which makes up the vast majority of the universe yet remains invisible to us .

The "beauty quark" connects three key concepts: First, the smallest entities in the universe have the shortest lifespans—the smaller something is, the shorter its existence. Second, observing the extremely small requires the world’s largest machines; in other words, the infinitesimal demands the immense. Third, dark matter—which remains invisible to us—might be hidden at this minuscule scale. This implies that everything vast in the universe, such as galaxies and dark matter, has its origins in something incredibly tiny that exists for only a fleeting .