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6 June, 12:55

The distance from Earth to the star Epsilon Eridani is about 10.5 light years. Which of the following statements is true?

A. It would take a modern space vehicle 21.0 years to reach Epsilon Eridani.

B. It takes a ray of light 10.5 years to travel from Earth to Epsilon Eridani.

C. It would take a modern space vehicle 10.5 years to reach Epsilon Eridani.

D. It takes a ray of light 21.0 years to travel from Epsilon Eridani to Earth.

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  1. 6 June, 16:23
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    The correct answer is B. - It would take a ray of light 10.5 light years to travel from Earth to Epsilon Eridani, or vice-versa. Using our current technology it would take far longer than 21.0 years for a space ship from Earth to travel that far - I would have to guess many hundreds of years.
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