Is it possible in principle for a human being who has a life expectancy of 70 years to make a round-trip journey to a part of the universe thousands of light-years distant? Explain.

Yes it is possible

Explanation: Due to the theory of relativity, the ship would move close to the speed of light, causing time dilation which would make time on the spacecraft move slower compared to that on Earth. However, earth's age would have passed as many light years as the journey.

answer; /// pinkberry and red mango are different in that pinkberry tries to convey a sense of (playfulness)while red mango tries to communicate (nutritional benefits and

the answer to your question is,

old stone age.

-mabel < 3