Dark Matter Theory

Dark matter is a mysterious invisible substance that makes up about 27% of the universe's total mass and energy. Although it doesn't emit, absorb, or reflect light, its presence is inferred from its gravitational effects on visible matter, such as the rotation of galaxies and the movement of galaxy clusters. Essentially, dark matter acts as a cosmic scaffold, holding galaxies together and influencing the universe's large-scale structure. While its exact nature remains unknown, scientists believe it consists of particles yet to be discovered, making it a key focus of modern astrophysics.