08. What is the exact distance to the edge of the Milky Way? (A K2S Question)

From The Space Library

I don't know about you, but I find it hard to think in thousands of millions of miles. When we leave our solar system and think of our galaxy, the Milky Way, it is so much more immense that we have to use different ways to describe distances. So we use light years. That sounds like a measurement of time, but it is not. It is a distance. A light year is about six million million miles, and the Milky Way is 100,000 light years across. We are about 20,000 light years from its edge.

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Answer provided by Derek Webber

Question and Answer extracted from the book Kids to Space - by Lonnie Schorer

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