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QUESTION
The time measured by an astronaut in the space craft to reach star B from star A is 2 years. Which of the
The time measured by an astronaut in the space craft to reach star B from star A is 2 years. Which of the
following is correct for the time measured by an observer on the Earth's station?
1 year
2 years
less than 2 years
more than 2 years
