Comments by "GeoDen" (@geoden) on "Michio Kaku: We'll Make Contact with Aliens in This Century | AI Podcast Clips" video.
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Radio, travelling at light speed, is actually too slow for making contact with anything more than a light year distant. If alien life exists, it is much too far away to consider. So I'm wondering how Mr. Kaku thinks it is going to happen? Space vehicles are out of the question - far too slow. Warp drives, wormholes, inter dimensional vehicles and other impossible 'faster than light' fantasies, are not going to happen. Nothing can travel faster than light, that's all there is to it. Even light speed is too slow for interstellar travel, at the best speed we could muster, humans would need lifetimes thousands of years long to go anywhere! Two way alien contact by radio will not happen either for the same reason, years between contacts. e.g. Two way contact to our nearest star system, Alpha Centauri, 4.2 light years away, would take 8.4 years! Let's retain our sanity and concentrate on things we CAN do!
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