The International Space Federation constructs new spaceship

Reference no: EM13556364

The International Space Federation constructs a new spaceship that can travel at a speed of 0.995c. Mary boards the spaceship totravel to Barnard's star which is 5.98 ly away. After reachingBarnard's star, the spaceship travels slowly around the star systemfor 3 years before returning back to Earth.
a) How much time does her journey take?
b) How much older is her twin Frank when she returns?

Reference no: EM13556364

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