Summary
The cosmological constant governs the expansion rate of the universe and is fine-tuned to an extraordinary degree to allow structure and life.
Observation / Fact
The observed value of the cosmological constant is non-zero but extremely small. If it were slightly larger, matter would never condense into galaxies.
Why This Is Non-Trivial
The life-permitting range is estimated to be on the order of 1 part in 10^120. No known physical law requires this value.
What It Implies
Such precision strongly suggests deliberate calibration rather than random selection, placing immense explanatory pressure on naturalistic accounts.
Related
- Joint Fine-Tuning Problem
- Multiverse Hypothesis