Tune the Universe

Λ magnitude:

✓ Self-contained. Both postulates satisfied. Our universe.

The curvature radiusCurvature Radius LA length that describes how tightly spacetime is curved. Derived directly from Λ: L = 1/√Λ. A very small Λ means a very large curvature radius — spacetime is nearly flat on human scales, which is why we don't notice it. Our observed value of Λ gives L ≈ 9.3 × 10²⁵ m (about 10 billion light-years), larger than the observable universe. L = 1/√ΛΛ — The Cosmological ConstantA single number Einstein added to his equations of gravity in 1917. It controls the large-scale energy density of empty space itself. If Λ is positive, empty space gently pushes outward — acting like a repulsive pressure woven into the fabric of the cosmos. Observed value: Λ ≈ 1.1 × 10⁻⁵² m⁻². and expansion rate H = √(Λ/3) are determined by the algebra. No outside input needed. The larger Λ is, the more tightly curved the universe.