The Planck Scale

The Planck scale is a set of very small measurements that mark the limits of our understanding of physics. It combines fundamental constants to define the smallest possible lengths, times, and energies—like the Planck length (~1.6×10⁻³⁵ meters). At this scale, gravity and quantum mechanics are thought to merge into a single theory, but current science can’t fully describe what happens there. Essentially, the Planck scale represents the realm where our current physics models break down, hinting at the need for a new, unified understanding of the universe’s fundamental nature.