Measuring Distances in Space with Light Years - Concepts - Chapter 1 Class 6 Geography - The Earth and the Solar System - Geography

Last updated at July 13, 2026 by

  • A light year is the distance that light travels in one year.
  • Speed of light - 3,00,000 km per second.
  • Thus, light travels a distance of about 9,50,000 crore km in one year.
  • Light years are used to measure vast distances in space, such as the distance between stars, galaxies, and other celestial bodies. 
  • The nearest star to our Solar System, Proxima Centauri, is about 4.24 light years away.
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