Kepler 22-b

The planet, Kepler 22-b, discovered recently lies about 600 light-years away and is 2.4 times the size of Earth, and has a temperature of about 22 degree Celsius. It is the closest confirmed planet yet to one like ours, an “Earth 2.0”
The new planet, confirmed by the astronomers using the US space agency's Kepler telescope, contains both land and water and has the right atmosphere to potentially support life.One of the key criteria for a planet to be habitable is that it remains roughly the right distance from its main star to be neither too cold nor too hot. And, the team says that the Kepler 22-b is in the “habitable zone” around a star not unlike our own.

There are now three planets(Gliese 581d“gleezer”,HD 85512b and Kepler 22-b) outside the system, known as exoplanets, which experts believe could potentially be colonised by future generations.

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