Direct detection is a research area in the field of particle physics that focuses on the detection of dark matter particles that make up a significant portion of the universe's mass but do not interact with electromagnetic radiation, making them difficult to detect. Scientists use various techniques and technologies, such as massive underground detectors, to search for signs of dark matter particles interacting with normal matter. Direct detection experiments aim to shed light on the nature and properties of dark matter, as well as its role in the formation and evolution of the universe.