Alpha Centauri B Discovered to Have an Earth-Size Planet

The planet has been in orbit in the closest star system to the solar system for some time. Alpha Centarui B's planet is about the size of Earth and probably very hot. There may be more planets looping Alpha Centauri A and/or B and some  might be just right (or not).

http://www.popsci.com/science/article/2012-10/breaking-earth-scale-planet-orbits-alpha-centauri-closest-star-system-our-own

http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/970717b.html data about Alpha Centauri

Alpha Centauri is a triple star system. It is Alpha Centauri B with the Earth-size planet. 

image credit: E.S.O. Alpha Centauri A & B illustrated with circles. Proxima Centarui 4.22 light years from Earth is not visible in this picture.