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What methods are known that could be used to travel to another galaxy in a human life time?

There's nothing in known physics that directly prevents this. You just have to travel really close to the speed of light and you can get anywhere in the universe wihin a human lifetime. In practice ...
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What methods are known that could be used to travel to another galaxy in a human life time?

No it is not really feasible for a human to travel to another galaxy as the distances involved are simply too great. Some people will not be happy with that answer, however I believe we should always ...
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