Cepheid variable stars are useful to astronomers as indicators of

[From: ] [author: ] [Date: 12-07-01] [Hit: ]

stars with very high-speed motion.D. the existence of black holes.-b-B. Cepheid variable stars have known brightness. Using this enables astronomers to determine the approximate distance to nearby galaxies by observing Cepheids in those galaxies.......

A. white dwarf star behavior.

B. distance, particularly to nearby galaxies.

C. stars with very high-speed motion.

D. the existence of black holes.

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b

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B. Cepheid variable stars have known brightness. Using this enables astronomers to determine the approximate distance to nearby galaxies by observing Cepheid's in those galaxies.

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c

1

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