It probably will not happen in a while if it happens at all. The nearest star system is 10 light years away. It will take us 10 years traveling at the speed of light to get there. And if we travel any slower than that it may be hundreds of years before we get there. Interstellar travel is virtually impossible for us right now. To get some idea of how long it takes just to travel from Earth to Pluto in our own solar system; right now there is a probe traveling to it at a speed of 52,000 miles per hour. When it finally reach Pluto 9 years would have gone by since the probe left Earth. So before we or any other intelligent life form out there, if there are any, can travel to the nearest star system they first must develop the technology to travel near the speed of light.
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