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Technically speaking, the sun is the closest star to Earth. <br /> . <br /> The next closest known star to the Earth is <b><i>Proxima Centauri</i></b>, red dwarf star<br />approximately 4.2 light years from Earth ... only about 278,000 times as far<br />from us as the Sun is. See the related link below for further information about<br />Proxima Centauri. <br /> .
PROXIMA CENTAURI (ALPHA CENTAURI C). Alpha Centauri C, better known as Proxima Centauri, is the nearest known individual star to the Sun, at a distance of 4.24 light years. Proxima Centauri lies in the constellation of Centaurus (The Centaur), just over four light-years from Earth.lpha Centauri is a binary star system consisting of Alpha Centauri A and Alpha Centauri B. It is sometimes referred to as Alpha Centauri AB (Î± Cen AB).