Why do stars appear to be attached to a giant dome?

Stars appear to be attached to a giant dome due to the way we perceive the night sky from Earth. The celestial sphere is a conceptual model that helps us visualize the positions of stars and other celestial objects as if they are projected onto an imaginary sphere surrounding our planet. This perspective is influenced by our limited vantage point and the vast distances involved, leading to the illusion of a flat, dome-like sky. In reality, stars are scattered throughout three-dimensional space, far beyond this perceived dome.