http://d.yimg.com/a/p/ap/20100425/ca...auSAERjHGKPA--AP - British astrophysicist Stephen Hawking says aliens are out there, but it could be too dangerous for humans to interact with extraterestial life.
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http://d.yimg.com/a/p/ap/20100425/ca...auSAERjHGKPA--AP - British astrophysicist Stephen Hawking says aliens are out there, but it could be too dangerous for humans to interact with extraterestial life.
Source