What is dark matter

Dark matter is one of the greatest mysteries in modern astrophysics and cosmology. It is a form of matter that does not emit, absorb, or reflect light, making it invisible to current electromagnetic observational instruments. Despite its elusive nature, dark matter's existence is inferred from its gravitational effects on visible matter, radiation, and the large-scale structure of the universe. Scientists estimate that dark matter constitutes about 27% of the universe's total mass-energy content, surpassing the ordinary matter we see around us, which makes up only about 5%.

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