Stars and Galaxies: Measuring Distance with Light Years

The video tutorial explores the structure of the universe, starting with our solar system and expanding to the Milky Way galaxy. It explains how light years are used to measure vast distances in space, providing examples such as the distance to Proxima Centauri and the universe's diameter. The tutorial concludes with a summary of key points.

Explain the concept of light years and how they are used in astronomy.

What calculations are involved in determining the distance to Proxima Centauri?

How is the diameter of the universe estimated in the presentation?