The Period-Luminosity Relation for Cepheid Variables Was Discovered in 1908

question 79

Multiple Choice

The period-luminosity relation for Cepheid variables was discovered in 1908 by:

• A)William Herschel.
• B)Henrietta Leavitt.
• C)Harlow Shapley.
• D)Heber Curtiss.
• E)Edwin Hubble.

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