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Ah yeah I don't think we will be around that time however it is always fun to write how the universe will end and these are just thoeries and we don't even know about the density of the universe and we need to solve a lot of things to create a decent interstellar travel ! :D

It is indeed fun to consider all options. However, the density of the universe, we have a nice set of experimental data to at least sort out among the plethora of models that were on the market ;)

Nice work. Great ending.