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Physics, 06.04.2020 15:46 21schraderlily

A Cephied is a star that belongs to a class of yellow supergiant pulsating stars; these stars vary periodically in brightness, and the relationship between their periods and is useful in deriving distances to them

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A Cephied is a star that belongs to a class of yellow supergiant pulsating stars; these stars vary p...
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