The fixed stars (from the Latin stellae fixae) are celestial objects that do not seem to move in relation to the other stars of the night sky. Hence, a fixed star is any
star except for the
Sun. A
nebula or other starlike object may also be called a fixed star. People in many cultures have imagined that the stars form pictures in the sky called
constellations. In ancient
Greek astronomy, the stars were believed to exist on a giant sphere that revolved around the Earth daily.
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