How Do We Know That Giant Stars Are Larger in Diameter

question 38

Multiple Choice

How do we know that giant stars are larger in diameter than the Sun?

• A)They are more luminous but have about the same temperature.
• B)They are less luminous but have about the same temperature.
• C)They are hotter but have about the same luminosity.
• D)They are cooler but have about the same luminosity.

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