When the moon is hardly seen, it's called a new moon.

Here's why:

* Lunar Phases: The moon doesn't produce its own light. We see it because it reflects sunlight. As the moon orbits the Earth, the angle at which the sun's light hits the moon changes, creating different phases.

* New Moon: During a new moon, the moon is positioned between the Earth and the Sun. This means the side of the moon facing Earth is completely dark, making it virtually invisible.

* Waxing Crescent: As the moon moves away from the sun, a sliver of its illuminated side becomes visible, called a waxing crescent.

Let me know if you have any other questions about the moon!