An eclipsing binary is a type of star system where two stars orbit each other in such a way that, from our viewpoint on Earth, one star passes in front of the other. This causes the brightness of the system to dim periodically, creating a pattern that astronomers can observe. By studying these changes in brightness, scientists can learn about the sizes, masses, and distances of the stars involved. These systems are important for understanding stellar evolution and the dynamics of star systems. Famous examples of eclipsing binaries include Algol and Beta Persei, which have been studied for centuries. Observing these stars helps astronomers refine their models of how stars live and interact.