Chapters 26 and 27

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Watch the first  video in the Instructor Insights Section of Week 10:

http://www.youtube.com/watch?v=17jymDn0W6U  (Watch this one on a big screen if you can!!)

And read about Light Years here:

http://earthsky.org/space/what-is-a-light-year 

Respond to the following:

  1. What did you learn from the video about the size of our solar system?
  2. What did you learn about the size of our galaxy?
  3. What did you learn about the size of the known universe?
  4. Why do we measure astronomical distances in Light Years?

Please include any reactions you had to the video

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