Babylonian astronomers viewed the sky as a celestial sphere, far above the Earth. This sphere had shiny stars on it. Like earlier astronomers, they organized and named constellations. They took special interest in the seven bright stars that did not stay in a particular constellation. These were the Star of the Day (Sun), the Star of the Night (Moon) and the five planets. These stars wandered around the celestial sphere, in an area now called the Zodiac, and the astronomers carefully recorded their travels.