Question

If two stars are 100 light-years apart, what does this mean?

Answer 1

Answer: Light years is a form of measurement like km

Explanation: light years is the speed of light which is 299792458 meters a second but for earth years for example 1 light year is 365 normal days Which is 8760 hours which is 525600 minutes which is 31536000 seconds

so 31536000 x 299792458 is 9,454,254,955,488,000 meters a year which to simplify it and not needing to say that many numbers we say one light year.

Answer 2

This means that light from one star takes 100 earth years to travel to the other.

it's 5.879 × 10^14 miles