* The Sun: The sun is the primary light source in our solar system.
* The Earth: We live on Earth, and the moon orbits around it.
* The Moon: The moon reflects sunlight, which is why we see it.
The Cycle:
1. New Moon: The moon is between the sun and Earth, so we cannot see it. The illuminated side of the moon is facing the sun, and the dark side faces us.
2. Waxing Crescent: As the moon moves in its orbit, a small sliver of its illuminated side becomes visible from Earth. This is the waxing crescent.
3. First Quarter: Half of the moon's face is illuminated and visible from Earth.
4. Waxing Gibbous: More than half of the moon's face is illuminated and visible.
5. Full Moon: The moon is opposite the sun in the sky, so the entire illuminated side is facing Earth.
6. Waning Gibbous: The amount of illuminated surface decreases as the moon moves away from its full phase.
7. Last Quarter: Again, half of the moon is illuminated, but the opposite side is visible compared to the First Quarter.
8. Waning Crescent: The illuminated side of the moon continues to decrease until it becomes a thin sliver again.
9. Back to New Moon: The cycle repeats.
In essence, the moon's phases are a result of the angle at which we see the sunlit portion of the moon as it orbits Earth.
