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Stephen Hawking says Humans have less than 1000 years on Earth before we are wiped out in a mass extinction

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Theoretical scientist and astronomer Stephen Hawking says humanity won't survive another 1,000 years on Earth and the only thing that could save us from certain extinction is setting up colonies elsewhere in the Solar System.

"[W]e must ... continue to go into space for the future of humanity," Hawking said in a lecture at the University of Cambridge this week. "I don’t think we will survive another 1,000 years without escaping beyond our fragile planet."

"Although the chance of a disaster to planet Earth in a given year may be quite low, it adds up over time, and becomes a near certainty in the next 1,000 or 10,000 years," Hawking said in the speech, according to the Christian Science Monitor. "By that time we should have spread out into space, and to other stars, so a disaster on Earth would not mean the end of the human race."

And the pace of space exploration seems to be ramping up. NASA is busy searching for "goldilocks" -- exoplanets that might  able sustain human life. Meanwhile, Space X CEO Elon Musk has already laid out his plans to colonize Mars within the next century.

Hawking end with some positive notes, according to British newspaper The Independent. 

"Remember to look up at the stars and not down at your feet. Try to make sense of what you see, wonder about what makes the universe exist," he said. "Be curious. However difficult life may seem, there is always something you can do and succeed at. It matters that you don't just give up."

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