 Alpha Centauri Bb

Alpha Centauri Bb (α Cen B b) was a proposed exoplanet orbiting the K-type main-sequence star Alpha Centauri B, located 4.37 light-years from Earth in the southern constellation of Centaurus, now shown not to exist.The claimed discovery of the planet was announced in October 2012 by a team of European observers, and the finding received widespread media attention.