Cepheid stars are useful to astronomers as indicators of
A) white dwarf star behavior.
B) distance,particularly to stars in our Galaxy and to nearby galaxies.
C) stars with very high-speed motion.
D) the mechanics of eclipsing variable stars.

Question

Quizplus · Accepted Answer

Cepheid stars have a well-established relationship between their brightness and pulsation period, which makes them useful as standard candles for determining distances. This property makes them particularly useful for studying the structure and distance of our Galaxy and nearby galaxies.

Cepheid Stars Are Useful to Astronomers as Indicators of