what is the closest star to earth
Proxima is the closest star to Earth. Faint red Proxima Centauri â at only 3,100 K and 500 times less bright than our sun â is nearly a fifth of a light year from Alpha Centauri A and B. This great distance is what calls into question its status as part of a triple star system.lpha Centauri is part of a double, or triple, star system. The two main components are Alpha Centauri A and Alpha Centauri B. The third star, a red dwarf called Proxima Centauri, is thought to be about 4.22 light-years distant and is actually our sunâs closest neighbor among the stars.