Castor and Pollux,identical twins,get into their individual spaceships and blast off simultaneously.Castor's is the faster ship,both return to Earth simultaneously.Which of the following statements is true?
A)Castor is older only if he traveled in the same direction as Pollux.
B)Castor is older only if he traveled in the opposite direction to Pollux.
C)Pollux is older only if he traveled in the same direction as Castor.
D)Pollux is older only if he traveled in the opposite direction to Castor.
E)Pollux is older.

Question

Quizplus · Accepted Answer

According to the theory of relativity, the twin who travels (in this case, Castor, because he's in the faster spaceship) will actually age more slowly than the twin who stays behind or travels slower (Pollux). This phenomenon is known as the "twin paradox." Therefore, upon their return to Earth, Pollux, who was in the slower ship or considered the less moving twin relative to Castor, will be older. The direction of travel does not affect the aging process in this context; it's the difference in velocity and the effects of time dilation that matter.

Castor and Pollux,identical Twins,get into Their Individual Spaceships and Blast