Earth-like planet -- sorta -- spotted in Alpha Centauri
Roughly 25 trillion miles (or 4.3 light years) from home, astronomers have found that the Alpha Centauri star system hosts a planet with a mass similar to that of Earth. Galactic geeks may recall references to this star system in "Star Trek," "Avatar," "Transformers," and countless other fictional entertainment.
The planet, officially named Alpha Centauri Bb, orbits Alpha Centauri B and took more than four years of observing to fully classify. … Read more
