you could easily, if you're technologically advanced enough, figure out a way to bend space time, and have a worm hole. the physics calculations make it possible, just very energy dependent, and would require significant resources if we use what we have now. when we get more resources, more advances information, they could easily scale up our own energy creation ability. it's all about perspective, and the advancement of your knowledge and technology. i'm sure there is plenty more information to learn that would make interstellar space easier.
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