Question

A 30 year old astronaut goes off on a long term mission in a spacecraft that travels at speeds close to that of the speed of light. The mission lasts exactly 20 years as measured on Earth. Biologically speaking, the astronauts age would be:

a) exactly 50 years

b) exactly 25 years

c) exactly 30 years

d) less than 50 years

e) more than 50 years

Answer 1

Answer: d. less than 50 years

<<<<<<<<<<<<explanation >>>>>>>>>>>>>>>>>

at very high speed as we know time will tend to move slower for astronaut but from data we can,t exactly know by how much so as so we can't predict by exactly how much so no to option a,b,c but as time is slow so his age will not be more than 50 so Answer D

<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>