Solar wind is a stream of charged particles, mainly electrons and protons, that are ejected from the surface of the Sun. This flow of particles travels through space at high speeds, reaching Earth and other planets in our solar system. The solar wind is a result of the Sun's outer layer, called the corona, being extremely hot and allowing particles to escape into space. When the solar wind interacts with the Earth's magnetic field, it can create beautiful natural displays known as auroras. These colorful lights are seen near the polar regions and occur when charged particles collide with gases in the atmosphere. Understanding solar wind is important for studying space weather and its effects on technology and satellites.