The universe is defined by two extreme scales: the largest scale is approximately 10^25 meters, defined by dark energy and the cosmic horizon beyond which we can never see due to accelerating expansion, and the smallest scale is the Planck length of approximately 10^-35 meters, the scale at which quantum gravity effects become dominant and space-time breaks down.
factualpending
Speaker
Neil TurokEvidence Quote
“there is a scale there's a fundamental scale in physics it's the scale defined by the dark energy which limits the region of the universe we will ever see... it's about 10 ^ 25 U uh meters the tiniest scale we know of in the universe is what we call the plank scale... about 10 Theus 35 M”
Source
Neil Turok Public Lecture: The Astonishing Simplicity of Everything— Perimeter Institute for Theoretical PhysicsCreated: 8/11/2026, 1:49:58 AM
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