Distant ‘Goldilocks’ world
Planet-hunters find a just-right world outside the solar system
By Stephen Ornes, 14:32 PM December 21, 2011
On December 5, astronomers introduced a newly discovered planet that seemed habitable for extraterrestrial life. The faraway world is an exoplanet, or planet outside our solar system, called Kepler-22b. It looks E.T.-friendly because its temperature is neither too hot nor too cold for liquid water, which is essential to life as we know it. The planet orbits its star at just the right distance, sometimes called the “Goldilocks” zone.
Early studies suggested that the average temperature on t...
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