Alpha Centauri is the closest star system to our solar system. It's actually a triple star system, consisting of Alpha Centauri A, Alpha Centauri B, and Proxima Centauri. Proxima Centauri is the closest individual star to Earth, at a distance of just over 4 light-years. Alpha Centauri A and B are similar to our Sun in size and composition, making them a popular target for exoplanet searches.
