CERN stands for the European Organization for Nuclear Research. It is an international organization located near Geneva, Switzerland, and is one of the world's leading centers for scientific research in the field of particle physics. CERN's flagship project is the Large Hadron Collider (LHC), which is the world's largest and most powerful particle accelerator. The LHC is used to study the basic building blocks of matter and the forces that govern their behavior. CERN's discoveries and research have had a significant impact on our understanding of the universe and have paved the way for many technological advancements.