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Lunar Cycle
| Term | Definition |
|---|---|
| The appearance of the moon as it makes a full revolution around the earth 28 days | Lunar cycle |
| When the light is "growing" from the right. Getting bigger | Waxing |
| The light is shrinking or getting smaller from the left | Waning |
| A small sliver of light. Looks like a crescent roll. | Crescent |
| When the moon is illuminated but not quite as full. So big) | Gibbous |
| When the moon is fully lit. Earth is between the sun and the moon | Full moon |
| When half of the moon is lit on the right side. | 1st Quarter |
| When half of the moon is lit on the left side. | 3rd (Last) Quarter |