Dark matter is a mysterious substance that makes up about 27% of the universe’s total mass and energy content. It does not emit, absorb, or reflect light, making it invisible and detectable only through its gravitational effects on visible matter.

Scientists infer the existence of dark matter from observations of the motion of galaxies within galaxy clusters, the rotation curves of galaxies, and the large-scale structure of the universe. These observations suggest that there is more mass present in the universe than what can be accounted for by visible matter such as stars, gas, and dust.

Despite its prevalence, the nature of dark matter remains one of the biggest mysteries in astrophysics and cosmology. Various theories have been proposed to explain it, including the existence of new types of particles beyond those described in the Standard Model of particle physics. However, as of now, dark matter has yet to be directly observed or identified, making it one of the most intriguing puzzles in modern science.

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