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Life on Earth has another good 1.75 billion years to go, study says

Earth could continue to host life for at least another 1.75 billion years, as long as nuclear holocaust, an errant asteroid or some other disaster doesn't intervene, a new study calculates.

But even without such dramatic doomsday scenarios, astronomical forces will eventually render the planet uninhabitable. Somewhere between 1.75 billion and 3.25 billion years from now, Earth will travel out of the solar system's habitable zone and into the "hot zone," new research indicates.

http://www.nbcnews.com/science/space/life-earth-has-another-good-1-75-billion-years-go-f4B11199461 (http://www.nbcnews.com/science/space/life-earth-has-another-good-1-75-billion-years-go-f4B11199461)