Teaching Science Glossary # A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Z zenith: The point in the sky that is directly above the observer. zodiac: The band of constellations through which the Sun, Moon and planets move in the course of a year. [ Back to index ] Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25