A team of planet hunters has announced the discovery of Gliese 581g, an Earth-sized planet orbiting a nearby star at a distance that places it squarely in the middle of the star’s “habitable zone,” where liquid water could exist on the planet’s surface.
via Gliese 581g: the most Earth like planet yet discovered – Telegraph.
20 light years away, the right size, in the habitable zone. Although it’s tidally locked, so it has a day side and a night side, which means the “not too hot, not too cold” Goldilocks thing is a global, not local property.
