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You discover a binary star system in which one member is a 15 solar mass main-sequence star and the other star is a 10 solar mass giant star. Why should you be surprised, at least at first
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You discover a binary star system in which one member is a 15 solar mass main-sequence star and the other star is a 10 solar mass giant star. Why should you be surprised, at least at first

User Jhermann
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Answer:

A star with 15 solar masses is too big to be a main-sequence star.

User Grinish Nepal
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