Alpha Centauri A and Alpha Centauri B Alpha Centauri Alfa Centauri Alpha Centauri System Proxima Centauri Alpha Centauri system Alpha Centauri System Alpha Centauri System Alpha Centauri system Alpha Centauri System Alfa Centauri Alpha Centauri Alpha Centauri Alpha Centauri A and Alpha Centauri B Alpha Centauri Alpha Centauri System Alpha Centauri Alpha Centauri system, closest to sun Alpha Centauri "Alpha Centauri, closest star system to our sun" Alpha Centauri system, closest to sun Alpha Centauri Alpha Centauri fourth-brightest star seen from Earth closet star Alpha Centauri A and Alpha Centauri B Alpha Centauri system Alpha Centauri