Suppose there is an astronaut who is traveling at a significant fraction of the speed of light.  Part (a) How long, in years, does it take her to travel 4.05 ly at 0.95405c (as measured by the Earth-bound observer)?   Part (b)  How long does it take according to the astronaut in years?

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Q: Advanced Physics Question

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Q: Question in attachments

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Q: just the last questions thanks

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Q: \

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