Explain why color is a measure of a star’s temperature. What elements are stars mostly made of? How do we know this? What did Annie Cannon contribute to the understanding of stellar spectra?

Research each of the following four topics and submit your answers in a .docx (Word) or PDF format:

Explain why color is a measure of a star’s temperature.
What elements are stars mostly made of? How do we know this?
What did Annie Cannon contribute to the understanding of stellar spectra?
What is the defining difference between a brown dwarf and a true star?

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