Proxima B is the nearest planet in another star system that might allow humans to live on it with appropriate adaptations. Primarily that would entail creating a way to filter out x-rays from the sun. With conventional chemical rocket space craft it would require 80,000 years to get to Proxima Centauri B, yet if travelling at half of the speed of light the time required for the journey would be somewhere around 8 or 9 years. That 4.26 light year distance would not seem so far with initial electro-magnetic acceleration.
It is possible to create a very vast electro-magnetic accelerator somewhere within the solar system that would be 100-300 million to a trillion miles in length capable of moving a charged module habitat inside to half light speed. The spacecraft would coast the rest of the way and use ion engines to begin slowing down with the help of gravity fields of stars on the far side. E-mag accelerators may be temporal and exist just when launches are required and could be built in a variety of ways using solar and/or nuclear power sources, perhaps with solar system planetary configurations at optimal configuration to host participating fields. Just a thought.
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