NASA scientists say our galaxy holds at least 300 million potentially habitable planets. According to the results of a study released at the end of October, half of the stars with temperatures similar to that of the Sun, could have rocky planets, which in turn could have water and consequently life.

“Though this result is far from a final value, and water on a planet’s surface is only one of many factors to support life, it’s extremely exciting that we calculated these worlds”, said Steve Bryson, a researcher at NASA’s Ames Research Centre in California’s Silicon Valley.



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