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Q&A I would like to know if "imaginary velocity" has serious problem

I am writing a SF story, in this story, a life-form(You can just call them alien) from another universe comes to earth. They used "imaginary velocity" to make their time elapse faster than all bein...

6 answers  ·  posted 9y ago by fairytale‭  ·  last activity 9y ago by fairytale‭

Question reality-check physics