T Tauri stars are young, variable stars that are still in the process of forming. They are typically found in star-forming regions and are characterized by their low mass and strong stellar winds. These stars are named after the prototype star, T Tauri, located in the constellation Taurus. T Tauri stars are often surrounded by a disk of gas and dust, which can eventually lead to the formation of planets. They exhibit changes in brightness due to their irregular activity and are important for understanding the early stages of stellar evolution.