According to the special theory of relativity, if a 35 year old astronaut sent on a space mission is accelerated to speeds close to that of light, and then returns to Earth after 20 years as measured on earth, what would be his biological age upon returning?
A) less than 55 years
B) more than 55 years
C) exactly 110 years
D) 55 years

Question

Quizplus · Accepted Answer

According to the special theory of relativity, time dilation occurs at speeds close to the speed of light, meaning the astronaut would age more slowly compared to those on Earth. Therefore, his biological age would be less than 55 years upon returning.

According to the Special Theory of Relativity, If a 35