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The light curve of eclipsing binary stars. The main image shows a large, orange-coloured star, with a smaller but hotter and brighter star, yellow in colour passing behind it. The curve below shows a large dip as the hotter and brighter star passes behind the larger but cooler star, and a smaller dip as the smaller star passes in front of the cooler star.

 3.1┬áMeasuring the masses of stars