T Tauri stars are young, variable stars that are still in the process of forming. They are typically less than 10 million years old and are found in star-forming regions like molecular clouds. These stars are characterized by their strong stellar winds and irregular brightness, which can change over time. These stars are important for understanding the early stages of stellar evolution. As they continue to contract and heat up, they will eventually become more stable and may evolve into main sequence stars. T Tauri stars are often surrounded by disks of gas and dust, which can lead to the formation of planets.