Plasma is one of the four fundamental states of matter, alongside solid, liquid, and gas. It consists of ionized gas, meaning that some of its atoms have lost or gained electrons, resulting in charged particles. Plasma is commonly found in stars, including our Sun, and is responsible for the light and heat they emit. In addition to its natural occurrences, plasma is used in various technologies, such as fluorescent lights and plasma TVs. Scientists also study plasma in laboratories to understand its properties and potential applications, including in nuclear fusion research, which aims to replicate the energy production processes of stars.