The Main Difference Between Cepheid Variable Stars and RR Lyrae

question 20

Multiple Choice

The main difference between Cepheid variable stars and RR Lyrae stars is

• A) their pulsation mechanisms.
• B) their masses.
• C) that Cepheids form at much greater distances from Earth.
• D) that RR Lyrae were discovered much earlier than Cepheids.

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