2050..AD..1st human colony in spcace- - - - does it sound real..??.

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NASA is spending billions od dollars per year to exploe the outert space,also encountered serious failures on the way..but why all tht..are we really going to move out of earth in near future..or we are just looking to find one more earth to start "interspacial" connections,.. we have all been fascinated by aliens in sci-fi,novels..so is NASA just trying to give these fancy dreams a touch of reality,..wht if we finally find aliens ???..friens/foe..