Click to play videoCambridge, London: Professor Stephen Hawkings is an unlikely celebrity. He achieved international fame with the publication of the scientific bestseller A Brief History of Time. He is disabled by a condition that has left him almost completely paralyzed.
CNN's Becky Anderson has a rare interview with Professor Stephen Hawking.
Stephen Hawking: I see great dangers for the human race. There have been a number of times in the past when its survival has been a question of touch and go. The Cuban Missile Crisis in 1963 was one of these. The frequency of such occasions is likely to increase in the future. We shall need great care and judgment to negotiate them all successfully. But I'm an optimist.
Becky Anderson: Do humans have a moral obligation to learn about space?
Stephen Hawking: I don't think the human race has a moral obligation to learn about space, but it would be foolish and shortsighted not to do so. It may hold the key to our survival."
Becky Anderson: What expectations do you have of the space flight you hope to be on next year?
Stephen Hawking: The Zero G flight last year was wonderful. After 40 years in a wheelchair, it was so good to be floating free. But the flight was just a warm up for space. The real thing should be much better, and last much longer.
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