* Lunar Phases: The moon's phases are caused by the changing angles of sunlight reflecting off its surface as it orbits the Earth.
* New Moon: During a new moon, the sun, Earth, and moon are aligned in a straight line, with the moon in the middle. This means the sunlit side of the moon is facing away from Earth.
* Shadow: Since the sunlit side is facing away, the side facing Earth is in shadow. This lack of reflected sunlight makes the new moon essentially invisible from Earth.
Think of it like this: imagine holding a ball in front of a flashlight. You can only see the side of the ball that the light is hitting. If you position the ball between you and the light, the side facing you is completely dark. The new moon is in that same position relative to the sun and Earth.