A continuous stream of tiny charged particles coming from the Sun. The solar wind interacts with the magnetic field and atmosphere of Earth causing auroras. The solar wind pours out of the Sun at 200 tons per second and a million miles per hour
Space Science Institute (SSI),Space Weather Center, Glossary of Space Weather-Related Terms, Colorado, USA 2011. http://www.spaceweathercenter.org/glossary/001/01. html, (Space Wthr - Amer) {860}