Space

Alpha Centauri is the closest star system to our Sun, located approximately 4.37 light-years away from Earth. It consists of three stars:

Alpha Centauri A: A yellow star slightly larger than Sun.
Alpha Centauri B: An orange star slightl dimmer than Sun.
Proxima Centauri: A red dwarf star, the closest one to our Sun.

Alpha Centauri is the fourth brightest star in the night sky at approximately zero magnitude, and as a result, humans have been familiar with this close neighbor since ancient times.