Dark Matter
Dark matter makes up about 27% of the energy content of the universe, yet its nature is unknown. It interacts gravitationally but not electromagnetically. Dozens of experiments are searching for direct evidence.
physics.cosmology
Metrics
Share of the Universe
Based on Planck satellite data (CMB analysis).
Relations
Dark matter manifests exclusively through gravitational effects.
Explanations
Dark matter makes up about 27 % of the total energy content of our universe – roughly one quarter of everything that exists. What's special about it: we cannot see it or touch it because it does not interact with light. But we know it's there through its gravitational effects on galaxies and other objects. That's why dozens of experiments worldwide are searching for it to finally understand what dark matter really is.
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Provenance
Status
seed
Review
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Last Updated
2026-02-17