Sunday, June 7, 2026

Why Can't the Universe Be Cyclic? Part 2: The Awkward Triumph of Inflation

A timeline of the universe, with the burst of inflation at far left expanding a subatomic patch to cosmic scales. Credit: NASA (public domain).

Inflation is awkward, possibly not even a proper theory, and it has reigned over cosmology for forty years anyway. Here is what it claims, the flatness, horizon, and monopole problems it solves, the structure-formation prediction it nailed, and the deep problems it still cannot escape.



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