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A NASA astronaut is traveling on a long space mission at a constant speed of $86\text{%}$ of the speed of light. She reports a measurement to Mission Control. The mission team on earth disagrees with the measurement.

Which of the following statements explains the discrepancy?


Because the astronaut is moving so fast, she cannot measure as accurately as the person on the earth in a fixed chair. The earth based measurement is the more accurate value.


The astronaut and the mission control team are both correct. They are measuring based on their reference frame and speed.


Since the astronaut is closer to the measurement, there is less error and that value is the correct one.


Neither measurement alone is necessarily correct. Good science practice demands multiple trials and taking an average. Each person should measure many more times and the average of all the readings is the best value.

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