What Method Is Used to Determine the Distances of Very

question 131

Multiple Choice

What method is used to determine the distances of very remote galaxies?

• A) measurement of the apparent magnitudes of Type Ia supernovae in the galaxies
• B) comparison of the apparent and absolute magnitudes of the galaxies
• C) measurement of the apparent brightness and period of Cepheid variable stars in the galaxies
• D) measurement of the angular size of a galaxy and an assumption about the actual physical size of the galaxy

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