Dark matter is a type of matter that is believed to make up about 85% of the total matter in the universe. It does not interact with light, which is why we cannot see it, but we can observe its gravitational effects on visible matter.
Physicists study dark matter through a variety of methods, including observing its gravitational effects on visible matter, analyzing the cosmic microwave background radiation, and conducting experiments with particle colliders.
The current understanding of dark matter is that it is made up of particles that do not interact with light, called WIMPs (Weakly Interacting Massive Particles). However, the exact nature and properties of dark matter are still unknown and are the subject of ongoing research.
Studying dark matter is important because it can help us better understand the structure and evolution of the universe. It can also provide insights into the nature of gravity and the fundamental laws of physics.
While dark matter itself cannot be directly detected, its effects can be observed through various methods, including gravitational lensing, galaxy rotation curves, and particle collider experiments. Scientists are also working on developing new technologies and techniques for detecting dark matter directly.