Question

Both zarak and samina are twenty years old. Zarak leaves earth in a spacecraft moving at .8c, while samina remains on the earth. Zark retums from a trip to star 30th light years from earth, which one will be of greater age
Explain?
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Answer 1

Answer:

What ? I didn't understand the question

Answer 2

Answer:

samina

Explanation:

zark is travelling in space. in this case samina have gravitational force because he in earth. according to the relativity theory the zark time will go slowly comparing on earth time.

(please note that my inglish is very poor)