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Careful measurements reveal that a star maintains a steady apparent brightness a

killian

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Careful measurements reveal that a star maintains a steady apparent brightness a

Careful measurements reveal that a star maintains a steady apparent brightness at most times, except that at precise intervals of 73 hours the star becomes dimmer for about 2 hours. The most likely explanation is that ________.
A) the star is a member of an eclipsing binary star system
B) the star is a Cepheid variable
C) the star is periodically ejecting gas into space, every 73 hours
D) the star is a white dwarf

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killian Author

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