Alpha Centauri system Alpha Centauri: The Closest Star System to Our Sun Alpha Centauri Alpha Centauri system Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri system Alpha Centauri our sun "Alpha Centauri, closest star system to our sun" Alpha Centauri system Alpha Centauri Alpha Centauri system Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri Alpha Centauri