A ‘Goldilocks’ world?

May 8, 2014 5:47 PM

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A ‘Goldilocks’ world?

Astronomers have spotted an exoplanet that looks a lot like home. Slightly larger than Earth, this distant, alien world could have liquid water, scientists say. That’s important because water is a key ingredient for life.

It's too soon to know if E.T. can call this planet home, and people will not be visiting any time soon. The planet orbits a star so far away that light, the fastest traveler in the universe, takes nearly 500 years to zip between that star and Earth. So the fastest spacecraft would need about 15 mill...

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