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Please answer the questions below:
1. Write down at LEAST FIVE (5) descriptions (or quotations) of the speed of light from the beginning of the documentary.
2. Why was the unit of a light-year introduced? Is it a unit of time or distance?
3. How does the speed of light limit our observation of the universe? How does it limit communication in outer space?
4. How do scientists use light speed to travel back into the past?
5. What did you learn from this documentary (3-5 sentences)
link to youtube episode: https://play.history.com/shows/the-universe/season-3/episode-3