- Light year is a measure of the distance light travels in one year
- An object is 10 light years from earth
- So, the distance between the object and the earth is equal to the distance light can travel in 10 years

Therefore, the distance between the object and the earth is equal to the distance light can travel in 10 years
Q: How far from Earth is an object that is 10 light years from Earth?
Context:
- Light year is a measure of the distance light travels in one year 
- An object is 10 light years from earth