The twelve constellations of the zodiac are important! Not because they predict our luck, love, health, and wealth, but because they are a great teaching tool to understand the motions of the Earth around the Sun. This Concept Comparison helps contrast the zodiac signs, derived from the constellations along the sun’s path in the sky. The star patterns along the ecliptic help Ss track the orbit and wobble of Earth. And they remind us of astronomy’s humble roots, from ancient cultures that have dr