Alpha Centauri is the nearest star system to the Sun, located at a distance of only 4.37 light years or 1.34 parsecs from Earth. It is the brightest star in Centaurus constellation and the third brightest star in sky.
Proxima Centauri, also known as Alpha Centauri C, is the closest star to Earth. It is located in the constellation Centaurus.
The star lies at a distance of only 4.243 light years from Earth. The name Proxima means “next to” or “nearest to” in Latin. Proxima’s distance to the second and third closest stars to the Sun, Alpha Centauri A and Alpha Centauri B, is 0.237 ± 0.011 light years.