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Take notes on information that helps to answer these questions, then turn these notes into paragraphs, with references to these notes class notes, reading handouts, textbook, any other appropriate sources.
1. How do we know how far away stars and galaxies are?
2. How do we know the direction that stars are moving?
3. How do we know how distant galaxies are moving?
4. How do we know that the Universe is expanding?
5. How do we know the Big Bang happened?