what is a light-year? Why do astronomers use light years instead of kilometres as a unit of distance?
Answers
Answered by
2
Answer:
It is a unit of measurement which is a unit of distance. So why is it measured in lightyears is because the distances are too large to be measured in normal kilometers or listening meters. Therefore they're measured in lightyears.
Answered by
0
Answer:
A light year is the distance travelled by light in 1 year
light travels 3×10^8 m/s knowing this we can calculate the distance it travels in 1 year
Astronomers use light year instead of kilometers because in space the distance between any two points is so astoundingly large that expressing it in kilometers would be quite a hassle instead by measuring how long light takes to get to a point expressing those distances is made easier
Similar questions