Asked by Leonidas

Can a person, in principle, travel from Earth to the galactic center (which is about 2.30×104 lightyears distant) in a normal lifetime? Explain, using either time-dilation or length contraction arguments. If they want to make the trip in 26 y what distance would the person travelling at nearly the speed of light measure (in light years, do not enter a unit)

What is γ for this situation?
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