Kepler 22b, a new Earth?

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NASA has confirmed the existence of a possible Earth-like planet 600 light years away. It is twice the size of the Earth and located in its suns habitable zone.

NASA's Kepler Mission Confirms Its First Planet in Habitable Zone of Sun-like Star

NASA's Kepler mission has confirmed its first planet in the "habitable zone," the region where liquid water could exist on a planet’s surface.
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While the planet is larger than Earth, its orbit of 290 days around a sun-like star resembles that of our world. The planet's host star belongs to the same class as our sun, called G-type, although it is slightly smaller and cooler.

NASA - NASA's Kepler Mission Confirms Its First Planet in Habitable Zone of Sun-like Star


This artist's conception illustrates Kepler-22b, a planet known to comfortably circle in the habitable zone of a sun-like star