| A | B |
|---|
| solar eclipse | When the Moon moves directly between the Sun and Earth and casts its shadow over part of the Earth. |
| lunar eclipse | When Earth's shadow falls on the Moon, causing the Moon to go dark. |
| waning | A gradual decrease in the amount of the Moon you see each night. |
| waxing | A gradual increase in the amount of the Moon you see each night. |
| new moon | This occurs when the Moon is between Earth and the Sun, causing the Moon to appear dark. |
| full moon | This occurs when all of the Moon's surface facing Earth reflects light. |
| solstice | The day when the Sun reaches its greatest distance north or south of the equator. |
| equinox | When the number of daylight hours and night time hours is equal all over the world. |
| revolution | The orbiting of one heavenly body around another. |
| rotation | The movement of a heavenly body turning on its axis. |
