what is the next closest star to our solar system
Alpha Centauri is the closest star to our solar system, at about 4.2 Light Years.. It's not a solar system in the sense that ours is though - it's a triple star system composed of Alpha Centauri A (a little bigger than the Sun), Alpha Centauri B (a little smaller than the Sun) and Proxima Centauri (a red dwarf - very small star).