World famous physicist Stephen Hawking has warned that humanity will not survive another 1,000 years unless it escapes Earth.
He made the assessment in his first Australian address at Sydney's Opera House, where he appeared through the use of holographic technology from his office in the University of Cambridge in Britain.
"We must continue to go into space for the future of humanity," Mr Hawking said.
"I don't think we will survive another 1,000 years without escaping beyond our fragile planet."
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