For decades, astronomers and physicists have grappled with a profound cosmic mystery: the vast majority of the universe appears to be invisible to us. Everything we can see and detect – stars, galaxies, planets, dust, and gas – only accounts for about 5% of the universe's total mass and energy. The remaining 95% is comprised of two enigmatic components: dark energy and dark matter. While dark energy is thought to be responsible for the accelerating expansion of the universe, dark matter is the gravitational glue that holds galaxies together. Without its unseen influence, galaxies would simply fly apart, as the visible matter within them doesn't provide enough gravitational pull to keep them cohesive. The evidence for dark matter is overwhelming, even if its nature remains elusive. It comes from various observations: the rotation curves of galaxies, where stars at the outskirts orbit much faster than expected based on visible matter; the gravitational lensing of light around galaxy clusters, where the bending of light indicates far more mass than can be seen; and the cosmic microwave background radiation, the afterglow of the Big Bang, which bears the imprint of dark matter's gravitational scaffolding. Scientists hypothesize that dark matter is composed of exotic, non-baryonic particles that do not interact with light or other electromagnetic forces, hence its "darkness." Unlike ordinary matter, it doesn't absorb, emit, or reflect light, making it incredibly difficult to detect directly. A leading candidate for dark matter particles are Weakly Interacting Massive Particles (WIMPs), hypothetical particles that interact gravitationally but only very feebly with other forces. Numerous experiments around the world are dedicated to the hunt for dark matter. Underground laboratories, shielded from cosmic rays, employ highly sensitive detectors designed to register the rare instance a WIMP might collide with an atomic nucleus. Particle accelerators like the Large Hadron Collider also search for signs of dark matter production in high-energy collisions. Despite decades of searching, dark matter remains an enigma. Its discovery would not only revolutionize our understanding of the universe's composition and evolution but also fundamentally alter our knowledge of particle physics. The quest to unveil this hidden majority continues, pushing the boundaries of human ingenuity and our understanding of the cosmos.