- Experts Estimate It Will Be 1,500 Years Until Contact With Extraterrestrial Life. http://www.space.com/33203-aliens-extraterrestrial-life-1500-years-for-contact.html#sthash.bcxmu75v.sfju 30 comments space
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- Humans Will Hear From Intelligent Aliens in This Century, Physicist Says | Live Science https://www.livescience.com/61857-intelligent-aliens-contact-kaku-reddit.html 39 comments
- E.T. Phones Earth? 1,500 Years Until Contact, Experts Estimate | Space http://www.space.com/33203-aliens-extraterrestrial-life-1500-years-for-contact.html?amp%3Bcmpid=social_spc_514648&%3Butm_campaign=socialtwitterspc&%3Butm_medium=twitter 23 comments
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