# The Simulation That Validated Cosmology — and the Black Hole Problem It Couldnt Solve

- slug: the-simulation-that-validated-cosmology-and-the-black-hole-problem-it-couldnt-solve
- date: 2026-04-19
- category: Space & Aerospace

COLIBRE matched 13 billion years of JWST observations almost perfectly. The one thing it cant explain: how the first supermassive black holes formed.

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