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Why can certain stars sometimes be identified as eclipsing bininary stars?
Wiki User
∙ 7y ago
A binary star consists of two stars gravitationally locked together in a mutual orbit. If the plane of that orbit is in line with us, as observers, then occasionally, one star will eclipse the other, producing a change in luminosity as one star is briefly blocked from view.
Wiki User
∙ 7y ago
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Why can certain stars sometimes be identified as eclipsing binary stars?
The word "eclipse" means to block the view of something. We usually use the word "eclipse" when the Moon blocks the Sun's light and casts a shadow on the Earth, or when the Earth blocks the Sun's light and casts a shadow on the Moon. If two stars are orbiting their system center of gravity, and IF the plane of their orbits passes through our solar system, then sometimes one star will block our view of the other one. If the two stars are different enough, then we'll see variation in the combined light that reaches the Earth. For example, if one is a red giant and the other is a bluish star, then usually we'll see the combined light output, but sometimes we'll see more blue light (when it is blocking the red star) and sometimes we'll see more red light and not much blue (when the red giant is blocking our view of the blue star). The Kepler Space Telescope worked pretty much the same way, before its gyros failed.
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