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 significantly dimmer for about 2 hours. The most likely explanation is that .

The star is a member of an eclipsing binary star system

Explanation:

A careful explanation about the measurement reveals that the star maintains a steady and apparent shape of brightness and at most of the time remains brighter. With and usual intervals of about the 73 hours and then the star becomes contestant dimmer for about every toe hours and is due to the fact that the star is a member of the eclipsing system.

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