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Suppose that a spaceship is launched in the year 2120 on a round-trip journey to a star that is 100 light-years away, and it makes the entire trip at a speed of 99.99% of the speed of light. Approximately what year would it be on Earth when the ship returns to Earth

Respuesta :

After completion of the trip described in the question, it would be the year 2320 on Earth.

Why would it be the year 2320?

This has to do with the way light-years are described. A light-year is in fact not a measurement of time, but of distance. It is how far you would travel in one year if traveling at the speed of light. So since the star is 100 light-years away, it would take 100 Earth years to get there and then 100 more to get back, making the current Earth year 2320.

Therefore, we can confirm that after completion of the trip described in the question, it would be the year 2320 on Earth.

To learn more about light-years visit:

https://brainly.com/question/1302132?referrer=searchResults