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  • Perhaps we’ve never been visited by aliens because they have looked upon earth and decided there’s no sign of intelligent life.

    Neil deGrasse Tyson
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    "Neil DeGrasse Tyson: ‘We Don’t Know What’s Driving 96% Of The Universe’". Interview with Cara Santa Maria, www.huffingtonpost.com. March 19, 2012.
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Perhaps we’ve never been visited by aliens because they have looked upon earth and decided there’s no sign of intelligent life. - Neil deGrasse Tyson
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