NOvA is a neutrino experiment designed to study the properties of neutrinos, which are tiny, nearly massless particles that interact very weakly with matter. Located in the United States, it consists of two detectors: one at Fermilab in Illinois and another in Ash River, Minnesota. The experiment aims to understand neutrino oscillations, which is the process by which neutrinos change from one type to another as they travel. The NOvA experiment uses a beam of neutrinos produced at Fermilab and sends it to the far detector. By comparing the number and types of neutrinos detected at both locations, scientists can gain insights into fundamental questions about the universe, including the nature of dark matter and the imbalance between matter and antimatter.