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@JoshuaACNewman @thomasfuchs Mild sarcasm ; I only know little of space physics, but my view is that it requires much more advanced technology than what we have now. A good read to get a feel for the physical barriers for such a travel is the book Tau zero from Poul Anderson ( https://www.amazon.fr/dp/1504054563?psc=1&th=1&linkCode=gg2&tag=galaxypcom-20 ) where a lot of the space travel hypotheses are backed by real scientific theories, you can imagine then how far away we are from the reach to another star