A type of star that has turned out to be extremely useful for measuring distances is
A) the eclipsing binaries
B) the Cepheid variables
C) the main sequence stars
D) the white dwarf stars
E) the stars that lie in the constellation of Orion

Question

Quizplus · Accepted Answer

Cepheid variables have a specific relationship between their period of brightness oscillation and their absolute magnitude, making them useful standard candles for measuring distances in the universe.

A Type of Star That Has Turned Out to Be