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Physics

The Evolution of the Matter Power Spectrum from Recombination to Today

Quick fact

The tiny fluctuations seen in the Cosmic Microwave Background, amplified by gravity over 13.8 billion years, are the very seeds that grew into the galaxies and clusters we observe today. The matter power spectrum traces this growth from an almost perfectly smooth state to a highly clumpy cosmic web.

Why this is interesting

The universe started out almost perfectly smooth—yet today it's filled with galaxies, clusters, and vast voids. How did such tiny ripples give rise to everything we see?

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The Evolution of the Matter Power Spectrum from Recombination to Today

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