| Answer | Crossword Clue |
|---|---|
| EAST | Direction of the moon's orbit |
| APOGEAL | Of a point in the moon's orbit. |
| CISLUNAR | Within the moon's orbit. |
| PERIGEE | Point in the moon's orbit. |
| APSIDES | Points in the moon's orbit. |
| APSIS | Point in the moon's orbit. |
| SYZYGY | Point in the moon's orbit, in astronomy. |
| PERIGEE | Point in the moon's orbit nearest the earth. |
| PTOLEMY | He discovered evection, the irregularity in the moon's orbit |
