Astronomer discovers three potentially habitable planets orbiting…

Canadian astronomer Philip Gregory has confirmed that there are three habitable zone planets orbiting the red dwarf star Gliese 667C. The star, which is part of a trinary star system, is only 22 light-years away and it features a planet that's only twice the mass of Earth — making it the lowest mass planet found in a… » 12/18/12 9:00am 12/18/12 9:00am