#50: Alpha Centauri | Another Sun, Another Earth?

<p>The nearest star system to Earth is Alpha Centauri, composed of three stars (including Proxima Centauri - the closest star to Earth, other than our Sun). We know that there are planets orbiting the stars of Alpha Centauri. Could one or more of the Alpha Centauri stars harbor Earth-like planets? And what are humanity's plans for exploring this system? And... what are its connections to E.T.?</p>