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Contrast Multiple Stars
General Information
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A multiple star is simply two or more stars which revolve around each other much like the Earth orbits the Sun.
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With the unaided eye, they can’t be seen as individual stars because they are too far away and too close together. A good analogy is the headlights of a distant car.
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This multiple star is special because you can see two different colors. The red or yellow star is cooler than the blue star.
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Often the cooler star will be brighter than the hotter star. This can lead into a discussion on how the sizes of stars, along with their temperatures, affect how bright they are.
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Perhaps as many as one-third to half of the stars in the sky are multiple stars.
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At least one multiple star system has as many as 9 components.
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Note that our sun is just an ordinary star.
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References
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