Answer:
The light from Star 2 reaches Star 1 in 63 years.
Explanation:
Let's draw the distances based on the given information:
Remember that a light year is a unit of astronomical distance equivalent to the distance that light travels in one year. The red line is the distance between Star 1 and Star 2, but we don't know this value, so we can find it.
To find the distance between Star 1 and Star 2 is to subtract the distance from star 1 to star 3 with the distance from star 2 to star 3, thus:
[tex]138\text{ light years-75 light years =}63\text{ light years.}[/tex]
The distance between Star 1 and Star 2 is 63 light years, which means that it takes 63 years for the light from Star 2 to reach Star 1.
Based on this logic, the answer would be that The light from Star 2 reaches Star 1 in 63 years.
