53. According to observers on the Earth frame, a planet is 30 light-years away from
Earth. If we plan to send a spaceship traveling at a constant speed of 0.6 c to
explore the alien planet, which of the following statements is false?
(A) The time the astronaut on board will take to reach the alien plant is less than
50 years.
(B) The distance the astronaut on board travels to reach the alien plant is less
than 30 light years.
(C) For a clock that is stationary to the Earth frame, recording a I-second
duration by the Earth's observer, the astronaut observes a longer duration
than 1 second.
(D) For a clock that is stationary to the spaceship frame, recording a l-second
duration by the astronaut, the Earth's observer observes a longer duration
than I second.
(E) None of the above is false.
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