- What is light?
- What is matter?
- How do light and matter interact?
- What are the three basic types of spectra?
- How does light tell us what things are made of?
- How does light tell us the temperatures of planets and stars?
- How does light tell us the speed of a distant object?
- How do telescopes help us learn about the universe?
- Why do we put telescopes in space?
- How is technology revolutionazing astronomy?
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