http://www.wired.com/wiredscience/20...ble-exoplanet/
Tidally locked with its primary, Gliese 581, Gliese 581g has a 36-earthday year and three times Earth's mass and is right in the Goldilocks zone.
Quote:
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“The fact that we found one so close and so early on in the search suggests there’s a lot of these things,” Butler says. Only about 100 other stars are as close to Earth as Gliese 581, and only 9 of them have been closely examined for planets. Odds are good that 10 to 20 percent of stars in the Milky Way have habitable planets . . .
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"And have the bright immensities received our risen Lord,
Where lightyears frame the Pleiades and point Orion's sword?"