Understanding Variable Stars - John R. Percy

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Variable stars are those that change brightness. Their variability may be due to geometric processes such as rotation, or eclipse by a companion star, or physical processes such as vibration,...

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Variable stars are those that change brightness. Their variability may be due to geometric processes such as rotation, or eclipse by a companion star, or physical processes such as vibration, solar flares, or cataclysmic explosions. In each case, ......