interstellar travel
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If it's true that there is little to no evidence that any technologically-developed life has visited our planet, could it be that no civilization in our galaxy has developed interstellar travel?
Asked by Brian1946 | 13 responses -
Does anyone believe we will ever be able to travel outside of our solar system?
Asked by Tenpinmaster | 42 responses -
On the prospect of nuclear-propelled interstellar travel at 10% the speed of light?
Asked by Blobman | 26 responses
