Steven Weinberg · 1977
A Modern View of the Origin of the Universe
Cover via Open LibraryRough AI truth score
83/100
The hot Big Bang, primordial nucleosynthesis, and relic radiation remain core cosmology. Precision has improved dramatically since publication, while the book's earliest-time narrative necessarily reaches beyond directly tested physics.
Based on three central claims · high confidence
Expansion, the cosmic microwave background, light-element abundances, and large-scale structure jointly support hot-Big-Bang cosmology. Planck-era measurements refine the age and parameters without overturning the book's central historical picture.
Big-bang nucleosynthesis predicts light-element abundances from baryon density and nuclear reaction rates, with broad observational agreement. Lithium remains a notable discrepancy, but it does not erase the successful hydrogen, helium, and deuterium framework.
Tested physics supports much of the thermal history after the earliest epochs, but inflation, baryogenesis, quantum gravity, and initial conditions remain unsettled. Extrapolation becomes increasingly model-dependent far before nucleosynthesis.
What this number means. It is an AI-generated first-pass judgment of three central factual or causal claims—not a rating, exhaustive fact-check, or human peer review. Claim credits are 100% for supported, 75% for mostly supported, 50% for mixed, and 25% for weak, then averaged and rounded. Lower confidence means the score should move more as better evidence arrives.
Method three-central-claims/0.1.0 · checked 2026-09-01 · 3/3 selected claims assessed · method and source audit