Science & Technology

Astronomers: One in Five Sun-like Stars Could Have Earth-Like Habitable Planet

Billions and billions

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The known odds of something—or someone—living far, far away from Earth improved beyond astronomers' boldest dreams on Monday. 

Astronomers reported that there could be as many as 40 billion habitable Earth-size planets in the galaxy, based on a new analysis of data from NASA's Kepler spacecraft.