Advertisement Remove all ads

Why is the Distance Between Stars Expressed in Light Years? What Do You Understand by the Statement that a Star is Eight Light Years Away from the Earth? - Science

Why is the distance between stars expressed in light years? What do you understand by the statement that a star is eight light years away from the Earth?

Advertisement Remove all ads


The distance of the stars from the Earth and the distance between the stars are very large. It is inconvenient to express these distances in kilometer (km). Thus, these large distances are expressed in light years. One light year is the distance travelled by light in one year. One light year is equal to 9.46 × 1012 km.

A star is located eight light years away from the Earth. This means that the distance between the star and the Earth is equivalent to the distance travelled by light in eight years, i.e., a star is located 8 × (9.46 × 1012) = 7.6 × 1013 km away from the Earth.

Concept: Stars and It's Types
  Is there an error in this question or solution?
Advertisement Remove all ads


NCERT Class 8 Science Textbook
Chapter 17 Stars and the Solar System
Q 14 | Page 235
Advertisement Remove all ads
Advertisement Remove all ads

View all notifications

      Forgot password?
View in app×