Dark Matter
Dark matter is an invisible substance that makes up about 27% of the universe's mass. It cannot be seen directly, as it doesn't emit or absorb light. In relativity and astrophysics, dark matter explains anomalies in galaxy rotation and gravitational effects that cannot be accounted for by visible matter alone. It plays a crucial role in structure formation, influencing how galaxies and galaxy clusters form and behave. Theoretical physicists explore its properties and potential particles, while collider physics experiments search for direct evidence. Understanding dark matter is essential for a complete picture of the cosmos.
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Dark matter is a type of matter that does not emit, absorb, or reflect light, making it invisible and detectable only through its gravitational effects. It makes up about 27% of the universe and is essential for explaining observed phenomena, such as the rotation of galaxies and the movements of galaxy clusters. While we cannot see dark matter directly, its presence is inferred from how it influences visible matter, radiation, and the large-scale structure of the cosmos. Researchers continue to study dark matter to unravel the mysteries of the universe and its fundamental components.