What Is Dark Matter?

We measure dark matter through its gravitational effects in ind rotatin, the rotations of galaxies. Most cosmologists think there's some particle we can't observe that because it doesn't interact with electromagnetic radiation there. But nobody in cosmology denies that the anomaly is there. Mathematical discrepancyes got relativities wrong, but are not mathematical discrepancies alone. These are directly implicated by the observations we make. The fact we don't fully understand exactly what they are doesn't remove the fact that the anomalies are there and we know that they are there.

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