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Today, multiple space agencies are investigating cutting-edge propulsion ideas that will allow for rapid transits to other bodies in the Solar System.
For a long time mankind has dreamed of manned missions to stars outside the solar system. Yet, such missions require excessive amount of time. But new project promises to make serious progress in solving this problem.
In Einstein's relativity and the Standard Model, we only have three spatial dimensions. But there could be more, and many think there are.
By spinning the universe, time travel into the past can be done according to the contemporary theory of Einstein.
It turns out that time travel into the past is actually relatively easy.