Can we ever live on other planets? Former astronaut Jeffrey Hoffman speaks to BBC’s Laura Trevelyan about why humanity’s future may depend on living on other worlds.
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Jeffrey Hoffman, a retired astronaut who spent more than 50 days in orbit on Nasa missions, talks to the BBC’s Laura Trevelyan about the challenges facing space colonists at BBC Future’s World-Changing Ideas Summit in New York on 21 October.
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