| A | B |
| star | a ball of hot gases that gives off light and other forms of energy |
| phases of the moon | the different ways the moon looks throughout the month |
| axis | an imaginary line through the center of the earth |
| waning moon | following a full moon, a decreasing amount of the moon’s near side is sunlight |
| constellation | a group of stars that forms a pattern |
| rotate | to turn on an axis |
| season | one of the four parts of the year caused by the earth’s tilt |
| revolve | to move in a path around another object |
| waxing moon | following the moon, an increasing amount of the moon’s near side is sunlight |
| equator | an imaginary line that circles Earth halfway between the North and South Poles |