Stephen Hawkings says humans need to start space colonisation this centuryhttp://www.independent.co.uk/news/science/stephen-hawking-just-moved-up-humanitys-deadline-for-escaping-earth-a7722181.html …
Replying to @edwest
Not at all suggesting that Musk paid him serious money to say that -- only that I'm quite sure he would have been blissfully happy to.
7:00 PM - 9 May 2017
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