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Guiding Questions
What does the darkness of the night sky tell us about the nature of the universe?
As the universe expands, what, if anything, is it expanding into?
Where did the Big Bang take place?
How do we know that the Big Bang was hot?
What was the universe like during its first 380,000 years?
What is “dark energy”? How does the curvature of the universe reveal its presence?
Has the universe always expanded at the same rate?
How reliable is our current understanding of the universe?