Stellar wind refers to the continuous flow of gas, plasma, and particles from a star into interstellar space. This phenomenon is most commonly observed in stars like the Sun and is driven by the star's high temperature and magnetic field. Stellar wind plays a crucial role in shaping the dynamics and evolution of a star's environment, affecting the formation of planetary systems, the distribution of elements in galaxies, and the interaction between stars and their surroundings. Researchers study stellar wind to better understand the physical processes occurring in stars and their impact on the broader universe.